Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_format.py @ 78069:a8aa77458e12 3.2

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Add c_size_t and c_ssize_t to the ctypes summary table.
author Antoine Pitrou <solipsis@pitrou.net>
date Thu, 12 Jul 2012 20:31:50 +0200
parents 8690d08d953f
children 831be7dc260a 231c6042c40c
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1 from test.support import verbose, TestFailed
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af88465999c7 String method conversion.
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2 import sys
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3 import test.support as support
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4 import unittest
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5
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6 maxsize = support.MAX_Py_ssize_t
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7
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8 # test string formatting operator (I am not sure if this is being tested
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9 # elsewhere but, surely, some of the given cases are *not* tested because
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10 # they crash python)
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11 # test on unicode strings as well
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12
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13 def testformat(formatstr, args, output=None, limit=None, overflowok=False):
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14 if verbose:
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15 if output:
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16 print("%r %% %r =? %r ..." %\
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17 (formatstr, args, output), end=' ')
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18 else:
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19 print("%r %% %r works? ..." % (formatstr, args), end=' ')
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20 try:
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21 result = formatstr % args
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22 except OverflowError:
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23 if not overflowok:
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24 raise
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25 if verbose:
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26 print('overflow (this is fine)')
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27 else:
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28 if output and limit is None and result != output:
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29 if verbose:
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30 print('no')
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31 raise AssertionError("%r %% %r == %r != %r" %
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32 (formatstr, args, result, output))
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33 # when 'limit' is specified, it determines how many characters
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34 # must match exactly; lengths must always match.
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35 # ex: limit=5, '12345678' matches '12345___'
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36 # (mainly for floating point format tests for which an exact match
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37 # can't be guaranteed due to rounding and representation errors)
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38 elif output and limit is not None and (
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39 len(result)!=len(output) or result[:limit]!=output[:limit]):
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40 if verbose:
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41 print('no')
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42 print("%s %% %s == %s != %s" % \
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43 (repr(formatstr), repr(args), repr(result), repr(output)))
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44 else:
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45 if verbose:
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46 print('yes')
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47
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48
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49 class FormatTest(unittest.TestCase):
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50 def test_format(self):
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51 testformat("%.1d", (1,), "1")
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52 testformat("%.*d", (sys.maxsize,1), overflowok=True) # expect overflow
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53 testformat("%.100d", (1,), '00000000000000000000000000000000000000'
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54 '000000000000000000000000000000000000000000000000000000'
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55 '00000001', overflowok=True)
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56 testformat("%#.117x", (1,), '0x00000000000000000000000000000000000'
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57 '000000000000000000000000000000000000000000000000000000'
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58 '0000000000000000000000000001',
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59 overflowok=True)
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60 testformat("%#.118x", (1,), '0x00000000000000000000000000000000000'
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61 '000000000000000000000000000000000000000000000000000000'
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62 '00000000000000000000000000001',
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63 overflowok=True)
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64
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65 testformat("%f", (1.0,), "1.000000")
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66 # these are trying to test the limits of the internal magic-number-length
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67 # formatting buffer, if that number changes then these tests are less
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68 # effective
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69 testformat("%#.*g", (109, -1.e+49/3.))
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70 testformat("%#.*g", (110, -1.e+49/3.))
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71 testformat("%#.*g", (110, -1.e+100/3.))
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72 # test some ridiculously large precision, expect overflow
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73 testformat('%12.*f', (123456, 1.0))
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74
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75 # check for internal overflow validation on length of precision
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76 # these tests should no longer cause overflow in Python
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77 # 2.7/3.1 and later.
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78 testformat("%#.*g", (110, -1.e+100/3.))
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79 testformat("%#.*G", (110, -1.e+100/3.))
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80 testformat("%#.*f", (110, -1.e+100/3.))
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81 testformat("%#.*F", (110, -1.e+100/3.))
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82 # Formatting of integers. Overflow is not ok
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83 testformat("%x", 10, "a")
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84 testformat("%x", 100000000000, "174876e800")
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85 testformat("%o", 10, "12")
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86 testformat("%o", 100000000000, "1351035564000")
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87 testformat("%d", 10, "10")
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88 testformat("%d", 100000000000, "100000000000")
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89 big = 123456789012345678901234567890
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90 testformat("%d", big, "123456789012345678901234567890")
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91 testformat("%d", -big, "-123456789012345678901234567890")
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92 testformat("%5d", -big, "-123456789012345678901234567890")
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93 testformat("%31d", -big, "-123456789012345678901234567890")
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94 testformat("%32d", -big, " -123456789012345678901234567890")
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95 testformat("%-32d", -big, "-123456789012345678901234567890 ")
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96 testformat("%032d", -big, "-0123456789012345678901234567890")
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97 testformat("%-032d", -big, "-123456789012345678901234567890 ")
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98 testformat("%034d", -big, "-000123456789012345678901234567890")
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99 testformat("%034d", big, "0000123456789012345678901234567890")
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100 testformat("%0+34d", big, "+000123456789012345678901234567890")
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101 testformat("%+34d", big, " +123456789012345678901234567890")
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102 testformat("%34d", big, " 123456789012345678901234567890")
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103 testformat("%.2d", big, "123456789012345678901234567890")
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104 testformat("%.30d", big, "123456789012345678901234567890")
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105 testformat("%.31d", big, "0123456789012345678901234567890")
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106 testformat("%32.31d", big, " 0123456789012345678901234567890")
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107 testformat("%d", float(big), "123456________________________", 6)
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108 big = 0x1234567890abcdef12345 # 21 hex digits
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109 testformat("%x", big, "1234567890abcdef12345")
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110 testformat("%x", -big, "-1234567890abcdef12345")
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111 testformat("%5x", -big, "-1234567890abcdef12345")
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112 testformat("%22x", -big, "-1234567890abcdef12345")
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113 testformat("%23x", -big, " -1234567890abcdef12345")
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114 testformat("%-23x", -big, "-1234567890abcdef12345 ")
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115 testformat("%023x", -big, "-01234567890abcdef12345")
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116 testformat("%-023x", -big, "-1234567890abcdef12345 ")
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117 testformat("%025x", -big, "-0001234567890abcdef12345")
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118 testformat("%025x", big, "00001234567890abcdef12345")
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119 testformat("%0+25x", big, "+0001234567890abcdef12345")
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120 testformat("%+25x", big, " +1234567890abcdef12345")
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121 testformat("%25x", big, " 1234567890abcdef12345")
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122 testformat("%.2x", big, "1234567890abcdef12345")
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123 testformat("%.21x", big, "1234567890abcdef12345")
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124 testformat("%.22x", big, "01234567890abcdef12345")
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125 testformat("%23.22x", big, " 01234567890abcdef12345")
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126 testformat("%-23.22x", big, "01234567890abcdef12345 ")
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127 testformat("%X", big, "1234567890ABCDEF12345")
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128 testformat("%#X", big, "0X1234567890ABCDEF12345")
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129 testformat("%#x", big, "0x1234567890abcdef12345")
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130 testformat("%#x", -big, "-0x1234567890abcdef12345")
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131 testformat("%#.23x", -big, "-0x001234567890abcdef12345")
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132 testformat("%#+.23x", big, "+0x001234567890abcdef12345")
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133 testformat("%# .23x", big, " 0x001234567890abcdef12345")
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134 testformat("%#+.23X", big, "+0X001234567890ABCDEF12345")
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135 testformat("%#-+.23X", big, "+0X001234567890ABCDEF12345")
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136 testformat("%#-+26.23X", big, "+0X001234567890ABCDEF12345")
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137 testformat("%#-+27.23X", big, "+0X001234567890ABCDEF12345 ")
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138 testformat("%#+27.23X", big, " +0X001234567890ABCDEF12345")
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139 # next one gets two leading zeroes from precision, and another from the
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140 # 0 flag and the width
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141 testformat("%#+027.23X", big, "+0X0001234567890ABCDEF12345")
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142 # same, except no 0 flag
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143 testformat("%#+27.23X", big, " +0X001234567890ABCDEF12345")
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144 testformat("%x", float(big), "123456_______________", 6)
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145 big = 0o12345670123456701234567012345670 # 32 octal digits
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146 testformat("%o", big, "12345670123456701234567012345670")
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147 testformat("%o", -big, "-12345670123456701234567012345670")
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148 testformat("%5o", -big, "-12345670123456701234567012345670")
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149 testformat("%33o", -big, "-12345670123456701234567012345670")
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150 testformat("%34o", -big, " -12345670123456701234567012345670")
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151 testformat("%-34o", -big, "-12345670123456701234567012345670 ")
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152 testformat("%034o", -big, "-012345670123456701234567012345670")
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153 testformat("%-034o", -big, "-12345670123456701234567012345670 ")
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154 testformat("%036o", -big, "-00012345670123456701234567012345670")
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155 testformat("%036o", big, "000012345670123456701234567012345670")
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156 testformat("%0+36o", big, "+00012345670123456701234567012345670")
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157 testformat("%+36o", big, " +12345670123456701234567012345670")
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158 testformat("%36o", big, " 12345670123456701234567012345670")
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159 testformat("%.2o", big, "12345670123456701234567012345670")
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160 testformat("%.32o", big, "12345670123456701234567012345670")
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161 testformat("%.33o", big, "012345670123456701234567012345670")
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162 testformat("%34.33o", big, " 012345670123456701234567012345670")
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163 testformat("%-34.33o", big, "012345670123456701234567012345670 ")
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164 testformat("%o", big, "12345670123456701234567012345670")
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165 testformat("%#o", big, "0o12345670123456701234567012345670")
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166 testformat("%#o", -big, "-0o12345670123456701234567012345670")
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167 testformat("%#.34o", -big, "-0o0012345670123456701234567012345670")
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168 testformat("%#+.34o", big, "+0o0012345670123456701234567012345670")
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169 testformat("%# .34o", big, " 0o0012345670123456701234567012345670")
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170 testformat("%#+.34o", big, "+0o0012345670123456701234567012345670")
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171 testformat("%#-+.34o", big, "+0o0012345670123456701234567012345670")
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172 testformat("%#-+37.34o", big, "+0o0012345670123456701234567012345670")
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173 testformat("%#+37.34o", big, "+0o0012345670123456701234567012345670")
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174 # next one gets one leading zero from precision
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175 testformat("%.33o", big, "012345670123456701234567012345670")
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176 # base marker shouldn't change that, since "0" is redundant
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177 testformat("%#.33o", big, "0o012345670123456701234567012345670")
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178 # but reduce precision, and base marker should add a zero
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179 testformat("%#.32o", big, "0o12345670123456701234567012345670")
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180 # one leading zero from precision, and another from "0" flag & width
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181 testformat("%034.33o", big, "0012345670123456701234567012345670")
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182 # base marker shouldn't change that
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183 testformat("%0#34.33o", big, "0o012345670123456701234567012345670")
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184 testformat("%o", float(big), "123456__________________________", 6)
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185 # Some small ints, in both Python int and flavors).
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186 testformat("%d", 42, "42")
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187 testformat("%d", -42, "-42")
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188 testformat("%d", 42, "42")
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189 testformat("%d", -42, "-42")
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190 testformat("%d", 42.0, "42")
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191 testformat("%#x", 1, "0x1")
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192 testformat("%#x", 1, "0x1")
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193 testformat("%#X", 1, "0X1")
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194 testformat("%#X", 1, "0X1")
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195 testformat("%#x", 1.0, "0x1")
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196 testformat("%#o", 1, "0o1")
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197 testformat("%#o", 1, "0o1")
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198 testformat("%#o", 0, "0o0")
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199 testformat("%#o", 0, "0o0")
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200 testformat("%o", 0, "0")
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201 testformat("%o", 0, "0")
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202 testformat("%d", 0, "0")
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203 testformat("%d", 0, "0")
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204 testformat("%#x", 0, "0x0")
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205 testformat("%#x", 0, "0x0")
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206 testformat("%#X", 0, "0X0")
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207 testformat("%#X", 0, "0X0")
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208 testformat("%x", 0x42, "42")
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209 testformat("%x", -0x42, "-42")
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210 testformat("%x", 0x42, "42")
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211 testformat("%x", -0x42, "-42")
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212 testformat("%x", float(0x42), "42")
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213 testformat("%o", 0o42, "42")
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214 testformat("%o", -0o42, "-42")
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215 testformat("%o", 0o42, "42")
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216 testformat("%o", -0o42, "-42")
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217 testformat("%o", float(0o42), "42")
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218 testformat("%r", "\u0378", "'\\u0378'") # non printable
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219 testformat("%a", "\u0378", "'\\u0378'") # non printable
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220 testformat("%r", "\u0374", "'\u0374'") # printable
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221 testformat("%a", "\u0374", "'\\u0374'") # printable
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222
b653eab13b73 The other half of Issue #1580: use short float repr where possible.
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223 # alternate float formatting
b653eab13b73 The other half of Issue #1580: use short float repr where possible.
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224 testformat('%g', 1.1, '1.1')
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225 testformat('%#g', 1.1, '1.10000')
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226
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227 # Test exception for unknown format characters
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228 if verbose:
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229 print('Testing exceptions')
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230 def test_exc(formatstr, args, exception, excmsg):
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231 try:
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232 testformat(formatstr, args)
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233 except exception as exc:
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234 if str(exc) == excmsg:
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235 if verbose:
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236 print("yes")
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237 else:
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238 if verbose: print('no')
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239 print('Unexpected ', exception, ':', repr(str(exc)))
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240 except:
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241 if verbose: print('no')
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242 print('Unexpected exception')
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243 raise
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244 else:
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245 raise TestFailed('did not get expected exception: %s' % excmsg)
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246 test_exc('abc %b', 1, ValueError,
da47e7e135ae #2630: Implement PEP 3138.
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247 "unsupported format character 'b' (0x62) at index 5")
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248 #test_exc(unicode('abc %\u3000','raw-unicode-escape'), 1, ValueError,
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249 # "unsupported format character '?' (0x3000) at index 5")
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250 test_exc('%d', '1', TypeError, "%d format: a number is required, not str")
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251 test_exc('%g', '1', TypeError, "a float is required")
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252 test_exc('no format', '1', TypeError,
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253 "not all arguments converted during string formatting")
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254 test_exc('no format', '1', TypeError,
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255 "not all arguments converted during string formatting")
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256
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257 if maxsize == 2**31-1:
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258 # crashes 2.2.1 and earlier:
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259 try:
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260 "%*d"%(maxsize, -127)
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261 except MemoryError:
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262 pass
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263 else:
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264 raise TestFailed('"%*d"%(maxsize, -127) should fail')
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Andrew M. Kuchling <amk@amk.ca>
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265
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266 def test_main():
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Benjamin Peterson <benjamin@python.org>
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267 support.run_unittest(FormatTest)
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Andrew M. Kuchling <amk@amk.ca>
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268
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f5cfa0ee02cf Fix the problem of not raising a TypeError exception when doing:
Neal Norwitz <nnorwitz@gmail.com>
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269
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270 if __name__ == "__main__":
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271 unittest.main()