Mercurial > cpython-lru_cache-weakref
annotate Lib/test/test_format.py @ 87690:66c1c9f32567 default tip
Add use_weakref option to functools.lru_cache
The use_weakref option makes lru_cache create weak references to the function
arguments when creating the cache key, which prevents them from staying in the
memory forever even after all other references to them are gone.
This is a proof of concept for http://bugs.python.org/issue19859
| author | Radomir Dopieralski <devel@sheep.art.pl> |
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| date | Tue, 03 Dec 2013 16:02:48 +0100 |
| parents | d115dc671f52 |
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| rev | line source |
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1 from test.support import verbose, TestFailed |
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Issue #13706: Fix format(int, "n") for locale with non-ASCII thousands separator
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2 import locale |
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3 import sys |
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4 import test.support as support |
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5 import unittest |
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6 |
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7 maxsize = support.MAX_Py_ssize_t |
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8 |
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9 # test string formatting operator (I am not sure if this is being tested |
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10 # elsewhere but, surely, some of the given cases are *not* tested because |
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11 # they crash python) |
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12 # test on unicode strings as well |
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13 |
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14 def testformat(formatstr, args, output=None, limit=None, overflowok=False): |
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15 if verbose: |
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16 if output: |
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17 print("{!a} % {!a} =? {!a} ...".format(formatstr, args, output), |
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18 end=' ') |
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19 else: |
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20 print("{!a} % {!a} works? ...".format(formatstr, args), end=' ') |
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21 try: |
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22 result = formatstr % args |
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23 except OverflowError: |
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24 if not overflowok: |
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25 raise |
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26 if verbose: |
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27 print('overflow (this is fine)') |
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28 else: |
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29 if output and limit is None and result != output: |
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30 if verbose: |
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31 print('no') |
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32 raise AssertionError("%r %% %r == %r != %r" % |
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33 (formatstr, args, result, output)) |
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34 # when 'limit' is specified, it determines how many characters |
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35 # must match exactly; lengths must always match. |
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36 # ex: limit=5, '12345678' matches '12345___' |
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37 # (mainly for floating point format tests for which an exact match |
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38 # can't be guaranteed due to rounding and representation errors) |
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39 elif output and limit is not None and ( |
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40 len(result)!=len(output) or result[:limit]!=output[:limit]): |
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41 if verbose: |
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42 print('no') |
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43 print("%s %% %s == %s != %s" % \ |
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44 (repr(formatstr), repr(args), repr(result), repr(output))) |
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45 else: |
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46 if verbose: |
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47 print('yes') |
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48 |
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49 |
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50 class FormatTest(unittest.TestCase): |
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51 def test_format(self): |
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52 testformat("%.1d", (1,), "1") |
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53 testformat("%.*d", (sys.maxsize,1), overflowok=True) # expect overflow |
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54 testformat("%.100d", (1,), '00000000000000000000000000000000000000' |
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55 '000000000000000000000000000000000000000000000000000000' |
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56 '00000001', overflowok=True) |
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57 testformat("%#.117x", (1,), '0x00000000000000000000000000000000000' |
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58 '000000000000000000000000000000000000000000000000000000' |
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59 '0000000000000000000000000001', |
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60 overflowok=True) |
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61 testformat("%#.118x", (1,), '0x00000000000000000000000000000000000' |
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62 '000000000000000000000000000000000000000000000000000000' |
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63 '00000000000000000000000000001', |
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64 overflowok=True) |
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65 |
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66 testformat("%f", (1.0,), "1.000000") |
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67 # these are trying to test the limits of the internal magic-number-length |
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68 # formatting buffer, if that number changes then these tests are less |
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69 # effective |
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70 testformat("%#.*g", (109, -1.e+49/3.)) |
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71 testformat("%#.*g", (110, -1.e+49/3.)) |
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72 testformat("%#.*g", (110, -1.e+100/3.)) |
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73 # test some ridiculously large precision, expect overflow |
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74 testformat('%12.*f', (123456, 1.0)) |
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75 |
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76 # check for internal overflow validation on length of precision |
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77 # these tests should no longer cause overflow in Python |
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78 # 2.7/3.1 and later. |
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79 testformat("%#.*g", (110, -1.e+100/3.)) |
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80 testformat("%#.*G", (110, -1.e+100/3.)) |
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81 testformat("%#.*f", (110, -1.e+100/3.)) |
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82 testformat("%#.*F", (110, -1.e+100/3.)) |
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83 # Formatting of integers. Overflow is not ok |
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84 testformat("%x", 10, "a") |
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85 testformat("%x", 100000000000, "174876e800") |
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86 testformat("%o", 10, "12") |
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87 testformat("%o", 100000000000, "1351035564000") |
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88 testformat("%d", 10, "10") |
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89 testformat("%d", 100000000000, "100000000000") |
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90 big = 123456789012345678901234567890 |
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91 testformat("%d", big, "123456789012345678901234567890") |
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92 testformat("%d", -big, "-123456789012345678901234567890") |
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93 testformat("%5d", -big, "-123456789012345678901234567890") |
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94 testformat("%31d", -big, "-123456789012345678901234567890") |
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95 testformat("%32d", -big, " -123456789012345678901234567890") |
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96 testformat("%-32d", -big, "-123456789012345678901234567890 ") |
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97 testformat("%032d", -big, "-0123456789012345678901234567890") |
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98 testformat("%-032d", -big, "-123456789012345678901234567890 ") |
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99 testformat("%034d", -big, "-000123456789012345678901234567890") |
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100 testformat("%034d", big, "0000123456789012345678901234567890") |
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101 testformat("%0+34d", big, "+000123456789012345678901234567890") |
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102 testformat("%+34d", big, " +123456789012345678901234567890") |
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103 testformat("%34d", big, " 123456789012345678901234567890") |
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104 testformat("%.2d", big, "123456789012345678901234567890") |
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105 testformat("%.30d", big, "123456789012345678901234567890") |
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106 testformat("%.31d", big, "0123456789012345678901234567890") |
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107 testformat("%32.31d", big, " 0123456789012345678901234567890") |
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108 testformat("%d", float(big), "123456________________________", 6) |
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109 big = 0x1234567890abcdef12345 # 21 hex digits |
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110 testformat("%x", big, "1234567890abcdef12345") |
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111 testformat("%x", -big, "-1234567890abcdef12345") |
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112 testformat("%5x", -big, "-1234567890abcdef12345") |
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113 testformat("%22x", -big, "-1234567890abcdef12345") |
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114 testformat("%23x", -big, " -1234567890abcdef12345") |
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115 testformat("%-23x", -big, "-1234567890abcdef12345 ") |
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116 testformat("%023x", -big, "-01234567890abcdef12345") |
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117 testformat("%-023x", -big, "-1234567890abcdef12345 ") |
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118 testformat("%025x", -big, "-0001234567890abcdef12345") |
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119 testformat("%025x", big, "00001234567890abcdef12345") |
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120 testformat("%0+25x", big, "+0001234567890abcdef12345") |
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121 testformat("%+25x", big, " +1234567890abcdef12345") |
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122 testformat("%25x", big, " 1234567890abcdef12345") |
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123 testformat("%.2x", big, "1234567890abcdef12345") |
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124 testformat("%.21x", big, "1234567890abcdef12345") |
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125 testformat("%.22x", big, "01234567890abcdef12345") |
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126 testformat("%23.22x", big, " 01234567890abcdef12345") |
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127 testformat("%-23.22x", big, "01234567890abcdef12345 ") |
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128 testformat("%X", big, "1234567890ABCDEF12345") |
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129 testformat("%#X", big, "0X1234567890ABCDEF12345") |
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130 testformat("%#x", big, "0x1234567890abcdef12345") |
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131 testformat("%#x", -big, "-0x1234567890abcdef12345") |
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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("%#-+.23X", big, "+0X001234567890ABCDEF12345") |
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137 testformat("%#-+26.23X", big, "+0X001234567890ABCDEF12345") |
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138 testformat("%#-+27.23X", big, "+0X001234567890ABCDEF12345 ") |
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139 testformat("%#+27.23X", big, " +0X001234567890ABCDEF12345") |
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140 # next one gets two leading zeroes from precision, and another from the |
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141 # 0 flag and the width |
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142 testformat("%#+027.23X", big, "+0X0001234567890ABCDEF12345") |
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143 # same, except no 0 flag |
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144 testformat("%#+27.23X", big, " +0X001234567890ABCDEF12345") |
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145 testformat("%x", float(big), "123456_______________", 6) |
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146 big = 0o12345670123456701234567012345670 # 32 octal digits |
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147 testformat("%o", big, "12345670123456701234567012345670") |
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148 testformat("%o", -big, "-12345670123456701234567012345670") |
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149 testformat("%5o", -big, "-12345670123456701234567012345670") |
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150 testformat("%33o", -big, "-12345670123456701234567012345670") |
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151 testformat("%34o", -big, " -12345670123456701234567012345670") |
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152 testformat("%-34o", -big, "-12345670123456701234567012345670 ") |
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153 testformat("%034o", -big, "-012345670123456701234567012345670") |
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154 testformat("%-034o", -big, "-12345670123456701234567012345670 ") |
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155 testformat("%036o", -big, "-00012345670123456701234567012345670") |
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156 testformat("%036o", big, "000012345670123456701234567012345670") |
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157 testformat("%0+36o", big, "+00012345670123456701234567012345670") |
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158 testformat("%+36o", big, " +12345670123456701234567012345670") |
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159 testformat("%36o", big, " 12345670123456701234567012345670") |
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160 testformat("%.2o", big, "12345670123456701234567012345670") |
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161 testformat("%.32o", big, "12345670123456701234567012345670") |
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162 testformat("%.33o", big, "012345670123456701234567012345670") |
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163 testformat("%34.33o", big, " 012345670123456701234567012345670") |
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164 testformat("%-34.33o", big, "012345670123456701234567012345670 ") |
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165 testformat("%o", big, "12345670123456701234567012345670") |
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166 testformat("%#o", big, "0o12345670123456701234567012345670") |
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167 testformat("%#o", -big, "-0o12345670123456701234567012345670") |
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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("%#-+.34o", big, "+0o0012345670123456701234567012345670") |
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173 testformat("%#-+37.34o", big, "+0o0012345670123456701234567012345670") |
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174 testformat("%#+37.34o", big, "+0o0012345670123456701234567012345670") |
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175 # next one gets one leading zero from precision |
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176 testformat("%.33o", big, "012345670123456701234567012345670") |
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177 # base marker shouldn't change that, since "0" is redundant |
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178 testformat("%#.33o", big, "0o012345670123456701234567012345670") |
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179 # but reduce precision, and base marker should add a zero |
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180 testformat("%#.32o", big, "0o12345670123456701234567012345670") |
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181 # one leading zero from precision, and another from "0" flag & width |
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182 testformat("%034.33o", big, "0012345670123456701234567012345670") |
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183 # base marker shouldn't change that |
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184 testformat("%0#34.33o", big, "0o012345670123456701234567012345670") |
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185 testformat("%o", float(big), "123456__________________________", 6) |
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186 # Some small ints, in both Python int and flavors). |
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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, "-42") |
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191 testformat("%d", 42.0, "42") |
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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, "0X1") |
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196 testformat("%#x", 1.0, "0x1") |
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197 testformat("%#o", 1, "0o1") |
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198 testformat("%#o", 1, "0o1") |
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199 testformat("%#o", 0, "0o0") |
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200 testformat("%#o", 0, "0o0") |
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201 testformat("%o", 0, "0") |
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202 testformat("%o", 0, "0") |
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203 testformat("%d", 0, "0") |
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204 testformat("%d", 0, "0") |
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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", 0, "0X0") |
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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", -0x42, "-42") |
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213 testformat("%x", float(0x42), "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", -0o42, "-42") |
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218 testformat("%o", float(0o42), "42") |
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219 testformat("%r", "\u0378", "'\\u0378'") # non printable |
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220 testformat("%a", "\u0378", "'\\u0378'") # non printable |
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221 testformat("%r", "\u0374", "'\u0374'") # printable |
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222 testformat("%a", "\u0374", "'\\u0374'") # printable |
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223 |
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224 # alternate float formatting |
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225 testformat('%g', 1.1, '1.1') |
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226 testformat('%#g', 1.1, '1.10000') |
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227 |
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228 # Test exception for unknown format characters |
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229 if verbose: |
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230 print('Testing exceptions') |
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231 def test_exc(formatstr, args, exception, excmsg): |
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232 try: |
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233 testformat(formatstr, args) |
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234 except exception as exc: |
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235 if str(exc) == excmsg: |
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236 if verbose: |
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237 print("yes") |
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238 else: |
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239 if verbose: print('no') |
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240 print('Unexpected ', exception, ':', repr(str(exc))) |
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241 except: |
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242 if verbose: print('no') |
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243 print('Unexpected exception') |
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244 raise |
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245 else: |
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246 raise TestFailed('did not get expected exception: %s' % excmsg) |
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247 test_exc('abc %b', 1, ValueError, |
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248 "unsupported format character 'b' (0x62) at index 5") |
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249 #test_exc(unicode('abc %\u3000','raw-unicode-escape'), 1, ValueError, |
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250 # "unsupported format character '?' (0x3000) at index 5") |
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251 test_exc('%d', '1', TypeError, "%d format: a number is required, not str") |
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252 test_exc('%g', '1', TypeError, "a float is required") |
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253 test_exc('no format', '1', TypeError, |
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254 "not all arguments converted during string formatting") |
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255 test_exc('no format', '1', TypeError, |
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256 "not all arguments converted during string formatting") |
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257 |
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258 if maxsize == 2**31-1: |
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259 # crashes 2.2.1 and earlier: |
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260 try: |
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261 "%*d"%(maxsize, -127) |
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262 except MemoryError: |
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263 pass |
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264 else: |
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265 raise TestFailed('"%*d"%(maxsize, -127) should fail') |
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266 |
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267 def test_non_ascii(self): |
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268 testformat("\u20ac=%f", (1.0,), "\u20ac=1.000000") |
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269 |
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270 self.assertEqual(format("abc", "\u2007<5"), "abc\u2007\u2007") |
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271 self.assertEqual(format(123, "\u2007<5"), "123\u2007\u2007") |
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272 self.assertEqual(format(12.3, "\u2007<6"), "12.3\u2007\u2007") |
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273 self.assertEqual(format(0j, "\u2007<4"), "0j\u2007\u2007") |
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274 self.assertEqual(format(1+2j, "\u2007<8"), "(1+2j)\u2007\u2007") |
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275 |
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276 self.assertEqual(format("abc", "\u2007>5"), "\u2007\u2007abc") |
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277 self.assertEqual(format(123, "\u2007>5"), "\u2007\u2007123") |
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278 self.assertEqual(format(12.3, "\u2007>6"), "\u2007\u200712.3") |
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279 self.assertEqual(format(1+2j, "\u2007>8"), "\u2007\u2007(1+2j)") |
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280 self.assertEqual(format(0j, "\u2007>4"), "\u2007\u20070j") |
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281 |
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282 self.assertEqual(format("abc", "\u2007^5"), "\u2007abc\u2007") |
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283 self.assertEqual(format(123, "\u2007^5"), "\u2007123\u2007") |
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284 self.assertEqual(format(12.3, "\u2007^6"), "\u200712.3\u2007") |
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285 self.assertEqual(format(1+2j, "\u2007^8"), "\u2007(1+2j)\u2007") |
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286 self.assertEqual(format(0j, "\u2007^4"), "\u20070j\u2007") |
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287 |
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288 def test_locale(self): |
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289 try: |
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290 oldloc = locale.setlocale(locale.LC_ALL) |
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291 locale.setlocale(locale.LC_ALL, '') |
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292 except locale.Error as err: |
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293 self.skipTest("Cannot set locale: {}".format(err)) |
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294 try: |
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295 localeconv = locale.localeconv() |
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296 sep = localeconv['thousands_sep'] |
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297 point = localeconv['decimal_point'] |
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298 |
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299 text = format(123456789, "n") |
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300 self.assertIn(sep, text) |
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301 self.assertEqual(text.replace(sep, ''), '123456789') |
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302 |
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303 text = format(1234.5, "n") |
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304 self.assertIn(sep, text) |
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305 self.assertIn(point, text) |
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306 self.assertEqual(text.replace(sep, ''), '1234' + point + '5') |
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307 finally: |
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308 locale.setlocale(locale.LC_ALL, oldloc) |
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309 |
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310 @support.cpython_only |
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311 def test_optimisations(self): |
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312 text = "abcde" # 5 characters |
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313 |
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314 self.assertIs("%s" % text, text) |
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315 self.assertIs("%.5s" % text, text) |
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316 self.assertIs("%.10s" % text, text) |
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317 self.assertIs("%1s" % text, text) |
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318 self.assertIs("%5s" % text, text) |
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319 |
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320 self.assertIs("{0}".format(text), text) |
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321 self.assertIs("{0:s}".format(text), text) |
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322 self.assertIs("{0:.5s}".format(text), text) |
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323 self.assertIs("{0:.10s}".format(text), text) |
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324 self.assertIs("{0:1s}".format(text), text) |
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325 self.assertIs("{0:5s}".format(text), text) |
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326 |
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327 self.assertIs(text % (), text) |
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328 self.assertIs(text.format(), text) |
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329 |
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330 @support.cpython_only |
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331 def test_precision(self): |
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332 from _testcapi import INT_MAX |
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333 |
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334 f = 1.2 |
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335 self.assertEqual(format(f, ".0f"), "1") |
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336 self.assertEqual(format(f, ".3f"), "1.200") |
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337 with self.assertRaises(ValueError) as cm: |
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338 format(f, ".%sf" % (INT_MAX + 1)) |
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339 |
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340 c = complex(f) |
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341 self.assertEqual(format(c, ".0f"), "1+0j") |
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342 self.assertEqual(format(c, ".3f"), "1.200+0.000j") |
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343 with self.assertRaises(ValueError) as cm: |
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344 format(c, ".%sf" % (INT_MAX + 1)) |
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345 |
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346 |
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347 if __name__ == "__main__": |
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348 unittest.main() |