annotate Lib/test/test_complex.py @ 74006:88198b93ff2f

Issue #13560: Add PyUnicode_EncodeLocale() * Use PyUnicode_EncodeLocale() in time.strftime() if wcsftime() is not available * Document my last changes in Misc/NEWS
author Victor Stinner <victor.stinner@haypocalc.com>
date Sat, 17 Dec 2011 04:13:41 +0100
parents 3c9232a684ae
children cddb3e1e5054 399e59ad0a70
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1 import unittest
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2 from test import support
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3
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4 from random import random
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5 from math import atan2, isnan, copysign
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6 import operator
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7
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8 INF = float("inf")
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9 NAN = float("nan")
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10 # These tests ensure that complex math does the right thing
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11
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12 class ComplexTest(unittest.TestCase):
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13
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14 def assertAlmostEqual(self, a, b):
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15 if isinstance(a, complex):
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16 if isinstance(b, complex):
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17 unittest.TestCase.assertAlmostEqual(self, a.real, b.real)
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18 unittest.TestCase.assertAlmostEqual(self, a.imag, b.imag)
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19 else:
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20 unittest.TestCase.assertAlmostEqual(self, a.real, b)
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21 unittest.TestCase.assertAlmostEqual(self, a.imag, 0.)
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22 else:
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23 if isinstance(b, complex):
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24 unittest.TestCase.assertAlmostEqual(self, a, b.real)
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25 unittest.TestCase.assertAlmostEqual(self, 0., b.imag)
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26 else:
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27 unittest.TestCase.assertAlmostEqual(self, a, b)
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28
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29 def assertCloseAbs(self, x, y, eps=1e-9):
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30 """Return true iff floats x and y "are close\""""
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31 # put the one with larger magnitude second
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32 if abs(x) > abs(y):
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33 x, y = y, x
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34 if y == 0:
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35 return abs(x) < eps
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36 if x == 0:
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37 return abs(y) < eps
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38 # check that relative difference < eps
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39 self.assertTrue(abs((x-y)/y) < eps)
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40
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41 def assertFloatsAreIdentical(self, x, y):
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42 """assert that floats x and y are identical, in the sense that:
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43 (1) both x and y are nans, or
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44 (2) both x and y are infinities, with the same sign, or
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45 (3) both x and y are zeros, with the same sign, or
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46 (4) x and y are both finite and nonzero, and x == y
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47
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48 """
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49 msg = 'floats {!r} and {!r} are not identical'
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50
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51 if isnan(x) or isnan(y):
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52 if isnan(x) and isnan(y):
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53 return
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54 elif x == y:
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55 if x != 0.0:
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56 return
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57 # both zero; check that signs match
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58 elif copysign(1.0, x) == copysign(1.0, y):
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59 return
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60 else:
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61 msg += ': zeros have different signs'
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62 self.fail(msg.format(x, y))
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63
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64 def assertClose(self, x, y, eps=1e-9):
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65 """Return true iff complexes x and y "are close\""""
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66 self.assertCloseAbs(x.real, y.real, eps)
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67 self.assertCloseAbs(x.imag, y.imag, eps)
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68
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69 def check_div(self, x, y):
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70 """Compute complex z=x*y, and check that z/x==y and z/y==x."""
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71 z = x * y
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72 if x != 0:
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73 q = z / x
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74 self.assertClose(q, y)
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75 q = z.__truediv__(x)
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76 self.assertClose(q, y)
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77 if y != 0:
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78 q = z / y
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79 self.assertClose(q, x)
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80 q = z.__truediv__(y)
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81 self.assertClose(q, x)
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82
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83 def test_truediv(self):
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84 simple_real = [float(i) for i in range(-5, 6)]
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85 simple_complex = [complex(x, y) for x in simple_real for y in simple_real]
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86 for x in simple_complex:
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87 for y in simple_complex:
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88 self.check_div(x, y)
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89
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90 # A naive complex division algorithm (such as in 2.0) is very prone to
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91 # nonsense errors for these (overflows and underflows).
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92 self.check_div(complex(1e200, 1e200), 1+0j)
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93 self.check_div(complex(1e-200, 1e-200), 1+0j)
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94
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95 # Just for fun.
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96 for i in range(100):
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97 self.check_div(complex(random(), random()),
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98 complex(random(), random()))
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99
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100 self.assertRaises(ZeroDivisionError, complex.__truediv__, 1+1j, 0+0j)
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101 # FIXME: The following currently crashes on Alpha
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102 # self.assertRaises(OverflowError, pow, 1e200+1j, 1e200+1j)
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103
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104 def test_truediv(self):
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105 self.assertAlmostEqual(complex.__truediv__(2+0j, 1+1j), 1-1j)
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106 self.assertRaises(ZeroDivisionError, complex.__truediv__, 1+1j, 0+0j)
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107
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108 def test_floordiv(self):
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109 self.assertRaises(TypeError, complex.__floordiv__, 3+0j, 1.5+0j)
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110 self.assertRaises(TypeError, complex.__floordiv__, 3+0j, 0+0j)
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111
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112 def test_richcompare(self):
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113 self.assertIs(complex.__eq__(1+1j, 1<<10000), False)
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114 self.assertIs(complex.__lt__(1+1j, None), NotImplemented)
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115 self.assertIs(complex.__eq__(1+1j, 1+1j), True)
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116 self.assertIs(complex.__eq__(1+1j, 2+2j), False)
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117 self.assertIs(complex.__ne__(1+1j, 1+1j), False)
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118 self.assertIs(complex.__ne__(1+1j, 2+2j), True)
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119 for i in range(1, 100):
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120 f = i / 100.0
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121 self.assertIs(complex.__eq__(f+0j, f), True)
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122 self.assertIs(complex.__ne__(f+0j, f), False)
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123 self.assertIs(complex.__eq__(complex(f, f), f), False)
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124 self.assertIs(complex.__ne__(complex(f, f), f), True)
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125 self.assertIs(complex.__lt__(1+1j, 2+2j), NotImplemented)
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126 self.assertIs(complex.__le__(1+1j, 2+2j), NotImplemented)
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127 self.assertIs(complex.__gt__(1+1j, 2+2j), NotImplemented)
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128 self.assertIs(complex.__ge__(1+1j, 2+2j), NotImplemented)
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129 self.assertRaises(TypeError, operator.lt, 1+1j, 2+2j)
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130 self.assertRaises(TypeError, operator.le, 1+1j, 2+2j)
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131 self.assertRaises(TypeError, operator.gt, 1+1j, 2+2j)
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132 self.assertRaises(TypeError, operator.ge, 1+1j, 2+2j)
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133 self.assertIs(operator.eq(1+1j, 1+1j), True)
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134 self.assertIs(operator.eq(1+1j, 2+2j), False)
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135 self.assertIs(operator.ne(1+1j, 1+1j), False)
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136 self.assertIs(operator.ne(1+1j, 2+2j), True)
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137
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138 def test_richcompare_boundaries(self):
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139 def check(n, deltas, is_equal, imag = 0.0):
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140 for delta in deltas:
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141 i = n + delta
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142 z = complex(i, imag)
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143 self.assertIs(complex.__eq__(z, i), is_equal(delta))
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144 self.assertIs(complex.__ne__(z, i), not is_equal(delta))
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145 # For IEEE-754 doubles the following should hold:
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146 # x in [2 ** (52 + i), 2 ** (53 + i + 1)] -> x mod 2 ** i == 0
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147 # where the interval is representable, of course.
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148 for i in range(1, 10):
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149 pow = 52 + i
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150 mult = 2 ** i
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151 check(2 ** pow, range(1, 101), lambda delta: delta % mult == 0)
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152 check(2 ** pow, range(1, 101), lambda delta: False, float(i))
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153 check(2 ** 53, range(-100, 0), lambda delta: True)
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154
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155 def test_mod(self):
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156 # % is no longer supported on complex numbers
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157 self.assertRaises(TypeError, (1+1j).__mod__, 0+0j)
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158 self.assertRaises(TypeError, lambda: (3.33+4.43j) % 0)
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159 self.assertRaises(TypeError, (1+1j).__mod__, 4.3j)
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160
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161 def test_divmod(self):
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162 self.assertRaises(TypeError, divmod, 1+1j, 1+0j)
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163 self.assertRaises(TypeError, divmod, 1+1j, 0+0j)
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164
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165 def test_pow(self):
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166 self.assertAlmostEqual(pow(1+1j, 0+0j), 1.0)
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167 self.assertAlmostEqual(pow(0+0j, 2+0j), 0.0)
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168 self.assertRaises(ZeroDivisionError, pow, 0+0j, 1j)
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169 self.assertAlmostEqual(pow(1j, -1), 1/1j)
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170 self.assertAlmostEqual(pow(1j, 200), 1)
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171 self.assertRaises(ValueError, pow, 1+1j, 1+1j, 1+1j)
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172
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173 a = 3.33+4.43j
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174 self.assertEqual(a ** 0j, 1)
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175 self.assertEqual(a ** 0.+0.j, 1)
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176
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177 self.assertEqual(3j ** 0j, 1)
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178 self.assertEqual(3j ** 0, 1)
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179
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180 try:
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181 0j ** a
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182 except ZeroDivisionError:
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183 pass
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184 else:
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185 self.fail("should fail 0.0 to negative or complex power")
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186
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187 try:
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188 0j ** (3-2j)
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189 except ZeroDivisionError:
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190 pass
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191 else:
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192 self.fail("should fail 0.0 to negative or complex power")
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193
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194 # The following is used to exercise certain code paths
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195 self.assertEqual(a ** 105, a ** 105)
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196 self.assertEqual(a ** -105, a ** -105)
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197 self.assertEqual(a ** -30, a ** -30)
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198
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199 self.assertEqual(0.0j ** 0, 1)
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200
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201 b = 5.1+2.3j
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202 self.assertRaises(ValueError, pow, a, b, 0)
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203
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204 def test_boolcontext(self):
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205 for i in range(100):
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206 self.assertTrue(complex(random() + 1e-6, random() + 1e-6))
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207 self.assertTrue(not complex(0.0, 0.0))
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208
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209 def test_conjugate(self):
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210 self.assertClose(complex(5.3, 9.8).conjugate(), 5.3-9.8j)
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211
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212 def test_constructor(self):
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213 class OS:
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214 def __init__(self, value): self.value = value
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215 def __complex__(self): return self.value
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216 class NS(object):
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217 def __init__(self, value): self.value = value
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218 def __complex__(self): return self.value
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219 self.assertEqual(complex(OS(1+10j)), 1+10j)
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220 self.assertEqual(complex(NS(1+10j)), 1+10j)
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221 self.assertRaises(TypeError, complex, OS(None))
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222 self.assertRaises(TypeError, complex, NS(None))
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223 self.assertRaises(TypeError, complex, {})
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224
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225 self.assertAlmostEqual(complex("1+10j"), 1+10j)
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226 self.assertAlmostEqual(complex(10), 10+0j)
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227 self.assertAlmostEqual(complex(10.0), 10+0j)
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228 self.assertAlmostEqual(complex(10), 10+0j)
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229 self.assertAlmostEqual(complex(10+0j), 10+0j)
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230 self.assertAlmostEqual(complex(1,10), 1+10j)
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231 self.assertAlmostEqual(complex(1,10), 1+10j)
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232 self.assertAlmostEqual(complex(1,10.0), 1+10j)
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233 self.assertAlmostEqual(complex(1,10), 1+10j)
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234 self.assertAlmostEqual(complex(1,10), 1+10j)
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235 self.assertAlmostEqual(complex(1,10.0), 1+10j)
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236 self.assertAlmostEqual(complex(1.0,10), 1+10j)
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237 self.assertAlmostEqual(complex(1.0,10), 1+10j)
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238 self.assertAlmostEqual(complex(1.0,10.0), 1+10j)
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239 self.assertAlmostEqual(complex(3.14+0j), 3.14+0j)
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240 self.assertAlmostEqual(complex(3.14), 3.14+0j)
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241 self.assertAlmostEqual(complex(314), 314.0+0j)
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242 self.assertAlmostEqual(complex(314), 314.0+0j)
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243 self.assertAlmostEqual(complex(3.14+0j, 0j), 3.14+0j)
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244 self.assertAlmostEqual(complex(3.14, 0.0), 3.14+0j)
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245 self.assertAlmostEqual(complex(314, 0), 314.0+0j)
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246 self.assertAlmostEqual(complex(314, 0), 314.0+0j)
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247 self.assertAlmostEqual(complex(0j, 3.14j), -3.14+0j)
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248 self.assertAlmostEqual(complex(0.0, 3.14j), -3.14+0j)
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249 self.assertAlmostEqual(complex(0j, 3.14), 3.14j)
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250 self.assertAlmostEqual(complex(0.0, 3.14), 3.14j)
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251 self.assertAlmostEqual(complex("1"), 1+0j)
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252 self.assertAlmostEqual(complex("1j"), 1j)
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253 self.assertAlmostEqual(complex(), 0)
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254 self.assertAlmostEqual(complex("-1"), -1)
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255 self.assertAlmostEqual(complex("+1"), +1)
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256 self.assertAlmostEqual(complex("(1+2j)"), 1+2j)
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257 self.assertAlmostEqual(complex("(1.3+2.2j)"), 1.3+2.2j)
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258 self.assertAlmostEqual(complex("3.14+1J"), 3.14+1j)
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259 self.assertAlmostEqual(complex(" ( +3.14-6J )"), 3.14-6j)
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260 self.assertAlmostEqual(complex(" ( +3.14-J )"), 3.14-1j)
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261 self.assertAlmostEqual(complex(" ( +3.14+j )"), 3.14+1j)
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262 self.assertAlmostEqual(complex("J"), 1j)
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263 self.assertAlmostEqual(complex("( j )"), 1j)
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264 self.assertAlmostEqual(complex("+J"), 1j)
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265 self.assertAlmostEqual(complex("( -j)"), -1j)
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266 self.assertAlmostEqual(complex('1e-500'), 0.0 + 0.0j)
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267 self.assertAlmostEqual(complex('-1e-500j'), 0.0 - 0.0j)
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268 self.assertAlmostEqual(complex('-1e-500+1e-500j'), -0.0 + 0.0j)
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269
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270 class complex2(complex): pass
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271 self.assertAlmostEqual(complex(complex2(1+1j)), 1+1j)
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272 self.assertAlmostEqual(complex(real=17, imag=23), 17+23j)
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273 self.assertAlmostEqual(complex(real=17+23j), 17+23j)
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274 self.assertAlmostEqual(complex(real=17+23j, imag=23), 17+46j)
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275 self.assertAlmostEqual(complex(real=1+2j, imag=3+4j), -3+5j)
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276
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277 # check that the sign of a zero in the real or imaginary part
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278 # is preserved when constructing from two floats. (These checks
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279 # are harmless on systems without support for signed zeros.)
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280 def split_zeros(x):
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281 """Function that produces different results for 0. and -0."""
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282 return atan2(x, -1.)
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283
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284 self.assertEqual(split_zeros(complex(1., 0.).imag), split_zeros(0.))
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285 self.assertEqual(split_zeros(complex(1., -0.).imag), split_zeros(-0.))
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286 self.assertEqual(split_zeros(complex(0., 1.).real), split_zeros(0.))
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287 self.assertEqual(split_zeros(complex(-0., 1.).real), split_zeros(-0.))
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288
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289 c = 3.14 + 1j
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290 self.assertTrue(complex(c) is c)
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291 del c
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292
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293 self.assertRaises(TypeError, complex, "1", "1")
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294 self.assertRaises(TypeError, complex, 1, "1")
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295
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296 # SF bug 543840: complex(string) accepts strings with \0
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297 # Fixed in 2.3.
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298 self.assertRaises(ValueError, complex, '1+1j\0j')
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299
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300 self.assertRaises(TypeError, int, 5+3j)
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301 self.assertRaises(TypeError, int, 5+3j)
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302 self.assertRaises(TypeError, float, 5+3j)
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303 self.assertRaises(ValueError, complex, "")
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304 self.assertRaises(TypeError, complex, None)
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305 self.assertRaises(ValueError, complex, "\0")
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306 self.assertRaises(ValueError, complex, "3\09")
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307 self.assertRaises(TypeError, complex, "1", "2")
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308 self.assertRaises(TypeError, complex, "1", 42)
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309 self.assertRaises(TypeError, complex, 1, "2")
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310 self.assertRaises(ValueError, complex, "1+")
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311 self.assertRaises(ValueError, complex, "1+1j+1j")
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312 self.assertRaises(ValueError, complex, "--")
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313 self.assertRaises(ValueError, complex, "(1+2j")
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314 self.assertRaises(ValueError, complex, "1+2j)")
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315 self.assertRaises(ValueError, complex, "1+(2j)")
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316 self.assertRaises(ValueError, complex, "(1+2j)123")
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317 self.assertRaises(ValueError, complex, "x")
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318 self.assertRaises(ValueError, complex, "1j+2")
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319 self.assertRaises(ValueError, complex, "1e1ej")
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320 self.assertRaises(ValueError, complex, "1e++1ej")
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321 self.assertRaises(ValueError, complex, ")1+2j(")
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322 # the following three are accepted by Python 2.6
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323 self.assertRaises(ValueError, complex, "1..1j")
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324 self.assertRaises(ValueError, complex, "1.11.1j")
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325 self.assertRaises(ValueError, complex, "1e1.1j")
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326
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327 # check that complex accepts long unicode strings
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328 self.assertEqual(type(complex("1"*500)), complex)
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329 # check whitespace processing
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330 self.assertEqual(complex('\N{EM SPACE}(\N{EN SPACE}1+1j ) '), 1+1j)
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331
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332 class EvilExc(Exception):
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333 pass
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334
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335 class evilcomplex:
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336 def __complex__(self):
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337 raise EvilExc
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338
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339 self.assertRaises(EvilExc, complex, evilcomplex())
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340
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341 class float2:
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342 def __init__(self, value):
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343 self.value = value
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344 def __float__(self):
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345 return self.value
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346
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347 self.assertAlmostEqual(complex(float2(42.)), 42)
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348 self.assertAlmostEqual(complex(real=float2(17.), imag=float2(23.)), 17+23j)
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349 self.assertRaises(TypeError, complex, float2(None))
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350
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351 class complex0(complex):
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352 """Test usage of __complex__() when inheriting from 'complex'"""
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353 def __complex__(self):
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354 return 42j
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355
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356 class complex1(complex):
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357 """Test usage of __complex__() with a __new__() method"""
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358 def __new__(self, value=0j):
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359 return complex.__new__(self, 2*value)
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360 def __complex__(self):
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361 return self
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362
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363 class complex2(complex):
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364 """Make sure that __complex__() calls fail if anything other than a
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365 complex is returned"""
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366 def __complex__(self):
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367 return None
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368
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369 self.assertAlmostEqual(complex(complex0(1j)), 42j)
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370 self.assertAlmostEqual(complex(complex1(1j)), 2j)
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371 self.assertRaises(TypeError, complex, complex2(1j))
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372
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373 def test_hash(self):
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374 for x in range(-30, 30):
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375 self.assertEqual(hash(x), hash(complex(x, 0)))
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376 x /= 3.0 # now check against floating point
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377 self.assertEqual(hash(x), hash(complex(x, 0.)))
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378
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379 def test_abs(self):
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380 nums = [complex(x/3., y/7.) for x in range(-9,9) for y in range(-9,9)]
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381 for num in nums:
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382 self.assertAlmostEqual((num.real**2 + num.imag**2) ** 0.5, abs(num))
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383
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384 def test_repr_str(self):
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385 def test(v, expected, test_fn=self.assertEqual):
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386 test_fn(repr(v), expected)
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387 test_fn(str(v), expected)
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parents: 66673
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388
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parents: 66673
diff changeset
389 test(1+6j, '(1+6j)')
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parents: 66673
diff changeset
390 test(1-6j, '(1-6j)')
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Eric Smith <eric@trueblade.com>
parents: 66673
diff changeset
391
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Eric Smith <eric@trueblade.com>
parents: 66673
diff changeset
392 test(-(1+0j), '(-1+-0j)', test_fn=self.assertNotEqual)
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Tim Peters <tim.peters@gmail.com>
parents:
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393
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394 test(complex(1., INF), "(1+infj)")
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parents: 66673
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395 test(complex(1., -INF), "(1-infj)")
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parents: 66673
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396 test(complex(INF, 1), "(inf+1j)")
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parents: 66673
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397 test(complex(-INF, INF), "(-inf+infj)")
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Eric Smith <eric@trueblade.com>
parents: 66673
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398 test(complex(NAN, 1), "(nan+1j)")
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Eric Smith <eric@trueblade.com>
parents: 66673
diff changeset
399 test(complex(1, NAN), "(1+nanj)")
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parents: 66673
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400 test(complex(NAN, NAN), "(nan+nanj)")
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parents: 66673
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401
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Eric Smith <eric@trueblade.com>
parents: 66673
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402 test(complex(0, INF), "infj")
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Eric Smith <eric@trueblade.com>
parents: 66673
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403 test(complex(0, -INF), "-infj")
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Eric Smith <eric@trueblade.com>
parents: 66673
diff changeset
404 test(complex(0, NAN), "nanj")
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Georg Brandl <georg@python.org>
parents: 34931
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405
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406 self.assertEqual(1-6j,complex(repr(1-6j)))
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407 self.assertEqual(1+6j,complex(repr(1+6j)))
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parents: 40775
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408 self.assertEqual(-6j,complex(repr(-6j)))
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409 self.assertEqual(6j,complex(repr(6j)))
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parents: 40775
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410
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Eric Smith <eric@trueblade.com>
parents: 66709
diff changeset
411 @support.requires_IEEE_754
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Eric Smith <eric@trueblade.com>
parents: 66709
diff changeset
412 def test_negative_zero_repr_str(self):
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parents: 66709
diff changeset
413 def test(v, expected, test_fn=self.assertEqual):
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Eric Smith <eric@trueblade.com>
parents: 66709
diff changeset
414 test_fn(repr(v), expected)
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415 test_fn(str(v), expected)
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416
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diff changeset
417 test(complex(0., 1.), "1j")
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418 test(complex(-0., 1.), "(-0+1j)")
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419 test(complex(0., -1.), "-1j")
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420 test(complex(-0., -1.), "(-0-1j)")
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421
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diff changeset
422 test(complex(0., 0.), "0j")
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parents: 66709
diff changeset
423 test(complex(0., -0.), "-0j")
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Eric Smith <eric@trueblade.com>
parents: 66709
diff changeset
424 test(complex(-0., 0.), "(-0+0j)")
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425 test(complex(-0., -0.), "(-0-0j)")
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426
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427 def test_neg(self):
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428 self.assertEqual(-(1+6j), -1-6j)
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429
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430 def test_file(self):
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431 a = 3.33+4.43j
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diff changeset
432 b = 5.1+2.3j
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433
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434 fo = None
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diff changeset
435 try:
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parents: 45371
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436 fo = open(support.TESTFN, "w")
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437 print(a, b, file=fo)
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438 fo.close()
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Benjamin Peterson <benjamin@python.org>
parents: 45371
diff changeset
439 fo = open(support.TESTFN, "r")
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440 self.assertEqual(fo.read(), ("%s %s\n" % (a, b)))
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441 finally:
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442 if (fo is not None) and (not fo.closed):
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443 fo.close()
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444 support.unlink(support.TESTFN)
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445
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446 def test_getnewargs(self):
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447 self.assertEqual((1+2j).__getnewargs__(), (1.0, 2.0))
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448 self.assertEqual((1-2j).__getnewargs__(), (1.0, -2.0))
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449 self.assertEqual((2j).__getnewargs__(), (0.0, 2.0))
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450 self.assertEqual((-0j).__getnewargs__(), (0.0, -0.0))
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451 self.assertEqual(complex(0, INF).__getnewargs__(), (0.0, INF))
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452 self.assertEqual(complex(INF, 0).__getnewargs__(), (INF, 0.0))
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453
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454 @support.requires_IEEE_754
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455 def test_plus_minus_0j(self):
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456 # test that -0j and 0j literals are not identified
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diff changeset
457 z1, z2 = 0j, -0j
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458 self.assertEqual(atan2(z1.imag, -1.), atan2(0., -1.))
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diff changeset
459 self.assertEqual(atan2(z2.imag, -1.), atan2(-0., -1.))
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460
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461 @support.requires_IEEE_754
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462 def test_negated_imaginary_literal(self):
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463 z0 = -0j
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464 z1 = -7j
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465 z2 = -1e1000j
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466 # Note: In versions of Python < 3.2, a negated imaginary literal
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467 # accidentally ended up with real part 0.0 instead of -0.0, thanks to a
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468 # modification during CST -> AST translation (see issue #9011). That's
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469 # fixed in Python 3.2.
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470 self.assertFloatsAreIdentical(z0.real, -0.0)
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471 self.assertFloatsAreIdentical(z0.imag, -0.0)
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472 self.assertFloatsAreIdentical(z1.real, -0.0)
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473 self.assertFloatsAreIdentical(z1.imag, -7.0)
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2bc54da4b82c Issue #9011: Tests for Python 3.2's treatment of negated imaginary literals.
Mark Dickinson <dickinsm@gmail.com>
parents: 61787
diff changeset
474 self.assertFloatsAreIdentical(z2.real, -0.0)
62648
e6f1b3d1040a Tests for Python 3.1's treatment of negated imaginary literals.
Mark Dickinson <dickinsm@gmail.com>
parents: 59028
diff changeset
475 self.assertFloatsAreIdentical(z2.imag, -INF)
e6f1b3d1040a Tests for Python 3.1's treatment of negated imaginary literals.
Mark Dickinson <dickinsm@gmail.com>
parents: 59028
diff changeset
476
66709
f2a4ade36a1e Issue #10624: Use support.requires_IEEE_754 in all appropriate tests.
Eric Smith <eric@trueblade.com>
parents: 66705
diff changeset
477 @support.requires_IEEE_754
54225
670fa0c0ff9a Issue #5829: complex('1e500') shouldn't raise OverflowError
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parents: 53849
diff changeset
478 def test_overflow(self):
670fa0c0ff9a Issue #5829: complex('1e500') shouldn't raise OverflowError
Mark Dickinson <dickinsm@gmail.com>
parents: 53849
diff changeset
479 self.assertEqual(complex("1e500"), complex(INF, 0.0))
670fa0c0ff9a Issue #5829: complex('1e500') shouldn't raise OverflowError
Mark Dickinson <dickinsm@gmail.com>
parents: 53849
diff changeset
480 self.assertEqual(complex("-1e500j"), complex(0.0, -INF))
670fa0c0ff9a Issue #5829: complex('1e500') shouldn't raise OverflowError
Mark Dickinson <dickinsm@gmail.com>
parents: 53849
diff changeset
481 self.assertEqual(complex("-1e500+1.8e308j"), complex(-INF, INF))
670fa0c0ff9a Issue #5829: complex('1e500') shouldn't raise OverflowError
Mark Dickinson <dickinsm@gmail.com>
parents: 53849
diff changeset
482
66709
f2a4ade36a1e Issue #10624: Use support.requires_IEEE_754 in all appropriate tests.
Eric Smith <eric@trueblade.com>
parents: 66705
diff changeset
483 @support.requires_IEEE_754
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330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
484 def test_repr_roundtrip(self):
53377
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diff changeset
485 vals = [0.0, 1e-500, 1e-315, 1e-200, 0.0123, 3.1415, 1e50, INF, NAN]
53332
330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
486 vals += [-v for v in vals]
53377
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diff changeset
487
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diff changeset
488 # complex(repr(z)) should recover z exactly, even for complex
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parents: 53343
diff changeset
489 # numbers involving an infinity, nan, or negative zero
53332
330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
490 for x in vals:
330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
491 for y in vals:
330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
492 z = complex(x, y)
330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
493 roundtrip = complex(repr(z))
330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
494 self.assertFloatsAreIdentical(z.real, roundtrip.real)
330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
495 self.assertFloatsAreIdentical(z.imag, roundtrip.imag)
330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
496
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diff changeset
497 # if we predefine some constants, then eval(repr(z)) should
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parents: 53343
diff changeset
498 # also work, except that it might change the sign of zeros
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parents: 53343
diff changeset
499 inf, nan = float('inf'), float('nan')
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diff changeset
500 infj, nanj = complex(0.0, inf), complex(0.0, nan)
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parents: 53343
diff changeset
501 for x in vals:
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parents: 53343
diff changeset
502 for y in vals:
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parents: 53343
diff changeset
503 z = complex(x, y)
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parents: 53343
diff changeset
504 roundtrip = eval(repr(z))
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parents: 53343
diff changeset
505 # adding 0.0 has no effect beside changing -0.0 to 0.0
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parents: 53343
diff changeset
506 self.assertFloatsAreIdentical(0.0 + z.real,
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parents: 53343
diff changeset
507 0.0 + roundtrip.real)
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parents: 53343
diff changeset
508 self.assertFloatsAreIdentical(0.0 + z.imag,
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parents: 53343
diff changeset
509 0.0 + roundtrip.imag)
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parents: 53343
diff changeset
510
53632
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
511 def test_format(self):
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
512 # empty format string is same as str()
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
513 self.assertEqual(format(1+3j, ''), str(1+3j))
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
514 self.assertEqual(format(1.5+3.5j, ''), str(1.5+3.5j))
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
515 self.assertEqual(format(3j, ''), str(3j))
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
516 self.assertEqual(format(3.2j, ''), str(3.2j))
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
517 self.assertEqual(format(3+0j, ''), str(3+0j))
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
518 self.assertEqual(format(3.2+0j, ''), str(3.2+0j))
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parents: 53343
diff changeset
519
53787
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
520 # empty presentation type should still be analogous to str,
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
521 # even when format string is nonempty (issue #5920).
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
522 self.assertEqual(format(3.2+0j, '-'), str(3.2+0j))
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
523 self.assertEqual(format(3.2+0j, '<'), str(3.2+0j))
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
524 z = 4/7. - 100j/7.
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
525 self.assertEqual(format(z, ''), str(z))
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
526 self.assertEqual(format(z, '-'), str(z))
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
527 self.assertEqual(format(z, '<'), str(z))
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
528 self.assertEqual(format(z, '10'), str(z))
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parents: 62648
diff changeset
529 z = complex(0.0, 3.0)
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parents: 62648
diff changeset
530 self.assertEqual(format(z, ''), str(z))
398fa7b7753a Merged revisions 83400 via svnmerge from
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parents: 62648
diff changeset
531 self.assertEqual(format(z, '-'), str(z))
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parents: 62648
diff changeset
532 self.assertEqual(format(z, '<'), str(z))
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parents: 62648
diff changeset
533 self.assertEqual(format(z, '2'), str(z))
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parents: 62648
diff changeset
534 z = complex(-0.0, 2.0)
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parents: 62648
diff changeset
535 self.assertEqual(format(z, ''), str(z))
398fa7b7753a Merged revisions 83400 via svnmerge from
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parents: 62648
diff changeset
536 self.assertEqual(format(z, '-'), str(z))
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parents: 62648
diff changeset
537 self.assertEqual(format(z, '<'), str(z))
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parents: 62648
diff changeset
538 self.assertEqual(format(z, '3'), str(z))
53787
c6376d3fa968 Issue #5920: Changed format.__float__ and complex.__float__ to use a precision of 12 when using the empty presentation type. This more closely matches str()'s behavior and reduces surprises when adding alignment flags to an empty format string. Patch by Mark Dickinson.
Eric Smith <eric@trueblade.com>
parents: 53632
diff changeset
539
53632
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
540 self.assertEqual(format(1+3j, 'g'), '1+3j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
541 self.assertEqual(format(3j, 'g'), '0+3j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
542 self.assertEqual(format(1.5+3.5j, 'g'), '1.5+3.5j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
543
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
544 self.assertEqual(format(1.5+3.5j, '+g'), '+1.5+3.5j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
545 self.assertEqual(format(1.5-3.5j, '+g'), '+1.5-3.5j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
546 self.assertEqual(format(1.5-3.5j, '-g'), '1.5-3.5j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
547 self.assertEqual(format(1.5+3.5j, ' g'), ' 1.5+3.5j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
548 self.assertEqual(format(1.5-3.5j, ' g'), ' 1.5-3.5j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
549 self.assertEqual(format(-1.5+3.5j, ' g'), '-1.5+3.5j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
550 self.assertEqual(format(-1.5-3.5j, ' g'), '-1.5-3.5j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
551
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
552 self.assertEqual(format(-1.5-3.5e-20j, 'g'), '-1.5-3.5e-20j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
553 self.assertEqual(format(-1.5-3.5j, 'f'), '-1.500000-3.500000j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
554 self.assertEqual(format(-1.5-3.5j, 'F'), '-1.500000-3.500000j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
555 self.assertEqual(format(-1.5-3.5j, 'e'), '-1.500000e+00-3.500000e+00j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
556 self.assertEqual(format(-1.5-3.5j, '.2e'), '-1.50e+00-3.50e+00j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
557 self.assertEqual(format(-1.5-3.5j, '.2E'), '-1.50E+00-3.50E+00j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
558 self.assertEqual(format(-1.5e10-3.5e5j, '.2G'), '-1.5E+10-3.5E+05j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
559
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
560 self.assertEqual(format(1.5+3j, '<20g'), '1.5+3j ')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
561 self.assertEqual(format(1.5+3j, '*<20g'), '1.5+3j**************')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
562 self.assertEqual(format(1.5+3j, '>20g'), ' 1.5+3j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
563 self.assertEqual(format(1.5+3j, '^20g'), ' 1.5+3j ')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
564 self.assertEqual(format(1.5+3j, '<20'), '(1.5+3j) ')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
565 self.assertEqual(format(1.5+3j, '>20'), ' (1.5+3j)')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
566 self.assertEqual(format(1.5+3j, '^20'), ' (1.5+3j) ')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
567 self.assertEqual(format(1.123-3.123j, '^20.2'), ' (1.1-3.1j) ')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
568
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Eric Smith <eric@trueblade.com>
parents: 55593
diff changeset
569 self.assertEqual(format(1.5+3j, '20.2f'), ' 1.50+3.00j')
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Eric Smith <eric@trueblade.com>
parents: 55593
diff changeset
570 self.assertEqual(format(1.5+3j, '>20.2f'), ' 1.50+3.00j')
53632
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
571 self.assertEqual(format(1.5+3j, '<20.2f'), '1.50+3.00j ')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
572 self.assertEqual(format(1.5e20+3j, '<20.2f'), '150000000000000000000.00+3.00j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
573 self.assertEqual(format(1.5e20+3j, '>40.2f'), ' 150000000000000000000.00+3.00j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
574 self.assertEqual(format(1.5e20+3j, '^40,.2f'), ' 150,000,000,000,000,000,000.00+3.00j ')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
575 self.assertEqual(format(1.5e21+3j, '^40,.2f'), ' 1,500,000,000,000,000,000,000.00+3.00j ')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
576 self.assertEqual(format(1.5e21+3000j, ',.2f'), '1,500,000,000,000,000,000,000.00+3,000.00j')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
577
66444
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
578 # Issue 7094: Alternate formatting (specified by #)
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
579 self.assertEqual(format(1+1j, '.0e'), '1e+00+1e+00j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
580 self.assertEqual(format(1+1j, '#.0e'), '1.e+00+1.e+00j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
581 self.assertEqual(format(1+1j, '.0f'), '1+1j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
582 self.assertEqual(format(1+1j, '#.0f'), '1.+1.j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
583 self.assertEqual(format(1.1+1.1j, 'g'), '1.1+1.1j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
584 self.assertEqual(format(1.1+1.1j, '#g'), '1.10000+1.10000j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
585
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
586 # Alternate doesn't make a difference for these, they format the same with or without it
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
587 self.assertEqual(format(1+1j, '.1e'), '1.0e+00+1.0e+00j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
588 self.assertEqual(format(1+1j, '#.1e'), '1.0e+00+1.0e+00j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
589 self.assertEqual(format(1+1j, '.1f'), '1.0+1.0j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
590 self.assertEqual(format(1+1j, '#.1f'), '1.0+1.0j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
591
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
592 # Misc. other alternate tests
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
593 self.assertEqual(format((-1.5+0.5j), '#f'), '-1.500000+0.500000j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
594 self.assertEqual(format((-1.5+0.5j), '#.0f'), '-2.+0.j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
595 self.assertEqual(format((-1.5+0.5j), '#e'), '-1.500000e+00+5.000000e-01j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
596 self.assertEqual(format((-1.5+0.5j), '#.0e'), '-2.e+00+5.e-01j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
597 self.assertEqual(format((-1.5+0.5j), '#g'), '-1.50000+0.500000j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
598 self.assertEqual(format((-1.5+0.5j), '.0g'), '-2+0.5j')
eded691497b7 Issue #7094: Add alternate ('#') flag to __format__ methods for float, complex and Decimal. Allows greater control over when decimal points appear. Added to make transitioning from %-formatting easier. '#g' still has a problem with Decimal which I'll fix soon.
Eric Smith <eric@trueblade.com>
parents: 66310
diff changeset
599 self.assertEqual(format((-1.5+0.5j), '#.0g'), '-2.+0.5j')
53632
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
600
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
601 # zero padding is invalid
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
602 self.assertRaises(ValueError, (1.5+0.5j).__format__, '010f')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
603
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
604 # '=' alignment is invalid
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
605 self.assertRaises(ValueError, (1.5+3j).__format__, '=20')
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
606
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
607 # integer presentation types are an error
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
608 for t in 'bcdoxX':
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
609 self.assertRaises(ValueError, (1.5+0.5j).__format__, t)
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
610
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
611 # make sure everything works in ''.format()
2cde0d003ffc Issue #1588: Add complex.__format__.
Eric Smith <eric@trueblade.com>
parents: 53377
diff changeset
612 self.assertEqual('*{0:.3f}*'.format(3.14159+2.71828j), '*3.142+2.718j*')
53332
330115137414 Issue #5816: Simplify code for parsing and printing of complex numbers.
Mark Dickinson <dickinsm@gmail.com>
parents: 47555
diff changeset
613
53849
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
614 # issue 3382
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
615 self.assertEqual(format(complex(NAN, NAN), 'f'), 'nan+nanj')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
616 self.assertEqual(format(complex(1, NAN), 'f'), '1.000000+nanj')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
617 self.assertEqual(format(complex(NAN, 1), 'f'), 'nan+1.000000j')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
618 self.assertEqual(format(complex(NAN, -1), 'f'), 'nan-1.000000j')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
619 self.assertEqual(format(complex(NAN, NAN), 'F'), 'NAN+NANj')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
620 self.assertEqual(format(complex(1, NAN), 'F'), '1.000000+NANj')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
621 self.assertEqual(format(complex(NAN, 1), 'F'), 'NAN+1.000000j')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
622 self.assertEqual(format(complex(NAN, -1), 'F'), 'NAN-1.000000j')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
623 self.assertEqual(format(complex(INF, INF), 'f'), 'inf+infj')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
624 self.assertEqual(format(complex(1, INF), 'f'), '1.000000+infj')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
625 self.assertEqual(format(complex(INF, 1), 'f'), 'inf+1.000000j')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
626 self.assertEqual(format(complex(INF, -1), 'f'), 'inf-1.000000j')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
627 self.assertEqual(format(complex(INF, INF), 'F'), 'INF+INFj')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
628 self.assertEqual(format(complex(1, INF), 'F'), '1.000000+INFj')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
629 self.assertEqual(format(complex(INF, 1), 'F'), 'INF+1.000000j')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
630 self.assertEqual(format(complex(INF, -1), 'F'), 'INF-1.000000j')
04bdc944718a Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
Eric Smith <eric@trueblade.com>
parents: 53787
diff changeset
631
29532
2fbd256a1db2 Port test_complex.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 24442
diff changeset
632 def test_main():
47201
9c930a32cebb #2621 rename test.test_support to test.support
Benjamin Peterson <benjamin@python.org>
parents: 45371
diff changeset
633 support.run_unittest(ComplexTest)
29532
2fbd256a1db2 Port test_complex.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 24442
diff changeset
634
2fbd256a1db2 Port test_complex.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 24442
diff changeset
635 if __name__ == "__main__":
2fbd256a1db2 Port test_complex.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 24442
diff changeset
636 test_main()