Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_extcall.py @ 54294:dba767bc3155 legacy-trunk

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remove mention of old ctypes version
author Benjamin Peterson <benjamin@python.org>
date Sat, 23 May 2009 20:59:09 +0000
parents 222b6d80e769
children a666134e6c0c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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222b6d80e769 Merged revisions 68805 via svnmerge from
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1 # -*- coding: utf-8 -*-
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2 """Doctest for method/function calls.
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3
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4 We're going the use these types for extra testing
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5
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6 >>> from UserList import UserList
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7 >>> from UserDict import UserDict
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8
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9 We're defining four helper functions
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10
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11 >>> def e(a,b):
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12 ... print a, b
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13
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14 >>> def f(*a, **k):
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15 ... print a, test_support.sortdict(k)
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16
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17 >>> def g(x, *y, **z):
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18 ... print x, y, test_support.sortdict(z)
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19
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20 >>> def h(j=1, a=2, h=3):
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21 ... print j, a, h
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22
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23 Argument list examples
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24
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25 >>> f()
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26 () {}
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27 >>> f(1)
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28 (1,) {}
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29 >>> f(1, 2)
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30 (1, 2) {}
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31 >>> f(1, 2, 3)
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32 (1, 2, 3) {}
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33 >>> f(1, 2, 3, *(4, 5))
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34 (1, 2, 3, 4, 5) {}
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35 >>> f(1, 2, 3, *[4, 5])
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36 (1, 2, 3, 4, 5) {}
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37 >>> f(1, 2, 3, *UserList([4, 5]))
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38 (1, 2, 3, 4, 5) {}
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39
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40 Here we add keyword arguments
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41
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42 >>> f(1, 2, 3, **{'a':4, 'b':5})
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43 (1, 2, 3) {'a': 4, 'b': 5}
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44 >>> f(1, 2, 3, *[4, 5], **{'a':6, 'b':7})
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45 (1, 2, 3, 4, 5) {'a': 6, 'b': 7}
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46 >>> f(1, 2, 3, x=4, y=5, *(6, 7), **{'a':8, 'b': 9})
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47 (1, 2, 3, 6, 7) {'a': 8, 'b': 9, 'x': 4, 'y': 5}
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48
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49 >>> f(1, 2, 3, **UserDict(a=4, b=5))
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50 (1, 2, 3) {'a': 4, 'b': 5}
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51 >>> f(1, 2, 3, *(4, 5), **UserDict(a=6, b=7))
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52 (1, 2, 3, 4, 5) {'a': 6, 'b': 7}
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53 >>> f(1, 2, 3, x=4, y=5, *(6, 7), **UserDict(a=8, b=9))
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54 (1, 2, 3, 6, 7) {'a': 8, 'b': 9, 'x': 4, 'y': 5}
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55
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56 Examples with invalid arguments (TypeErrors). We're also testing the function
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57 names in the exception messages.
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58
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59 Verify clearing of SF bug #733667
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60
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61 >>> e(c=4)
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62 Traceback (most recent call last):
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63 ...
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64 TypeError: e() got an unexpected keyword argument 'c'
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65
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66 >>> g()
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67 Traceback (most recent call last):
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68 ...
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69 TypeError: g() takes at least 1 argument (0 given)
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70
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71 >>> g(*())
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72 Traceback (most recent call last):
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73 ...
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74 TypeError: g() takes at least 1 argument (0 given)
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75
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76 >>> g(*(), **{})
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77 Traceback (most recent call last):
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78 ...
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79 TypeError: g() takes at least 1 argument (0 given)
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80
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81 >>> g(1)
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82 1 () {}
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83 >>> g(1, 2)
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84 1 (2,) {}
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85 >>> g(1, 2, 3)
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86 1 (2, 3) {}
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87 >>> g(1, 2, 3, *(4, 5))
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88 1 (2, 3, 4, 5) {}
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89
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90 >>> class Nothing: pass
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91 ...
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92 >>> g(*Nothing())
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93 Traceback (most recent call last):
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94 ...
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95 TypeError: g() argument after * must be a sequence, not instance
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96
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97 >>> class Nothing:
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98 ... def __len__(self): return 5
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99 ...
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100
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101 >>> g(*Nothing())
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102 Traceback (most recent call last):
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103 ...
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104 TypeError: g() argument after * must be a sequence, not instance
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105
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106 >>> class Nothing():
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107 ... def __len__(self): return 5
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108 ... def __getitem__(self, i):
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109 ... if i<3: return i
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110 ... else: raise IndexError(i)
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111 ...
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112
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113 >>> g(*Nothing())
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114 0 (1, 2) {}
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115
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116 >>> class Nothing:
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117 ... def __init__(self): self.c = 0
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118 ... def __iter__(self): return self
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119 ... def next(self):
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120 ... if self.c == 4:
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121 ... raise StopIteration
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122 ... c = self.c
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123 ... self.c += 1
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124 ... return c
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125 ...
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126
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127 >>> g(*Nothing())
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128 0 (1, 2, 3) {}
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129
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130 Make sure that the function doesn't stomp the dictionary
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131
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132 >>> d = {'a': 1, 'b': 2, 'c': 3}
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133 >>> d2 = d.copy()
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134 >>> g(1, d=4, **d)
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135 1 () {'a': 1, 'b': 2, 'c': 3, 'd': 4}
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136 >>> d == d2
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137 True
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138
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139 What about willful misconduct?
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140
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141 >>> def saboteur(**kw):
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142 ... kw['x'] = 'm'
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143 ... return kw
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144
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145 >>> d = {}
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146 >>> kw = saboteur(a=1, **d)
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147 >>> d
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148 {}
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149
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150
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151 >>> g(1, 2, 3, **{'x': 4, 'y': 5})
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152 Traceback (most recent call last):
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153 ...
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154 TypeError: g() got multiple values for keyword argument 'x'
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155
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156 >>> f(**{1:2})
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157 Traceback (most recent call last):
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158 ...
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159 TypeError: f() keywords must be strings
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160
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161 >>> h(**{'e': 2})
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162 Traceback (most recent call last):
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163 ...
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164 TypeError: h() got an unexpected keyword argument 'e'
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165
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166 >>> h(*h)
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167 Traceback (most recent call last):
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168 ...
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169 TypeError: h() argument after * must be a sequence, not function
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170
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171 >>> dir(*h)
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172 Traceback (most recent call last):
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173 ...
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174 TypeError: dir() argument after * must be a sequence, not function
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175
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176 >>> None(*h)
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177 Traceback (most recent call last):
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178 ...
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179 TypeError: NoneType object argument after * must be a sequence, \
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180 not function
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181
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182 >>> h(**h)
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183 Traceback (most recent call last):
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184 ...
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185 TypeError: h() argument after ** must be a mapping, not function
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186
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187 >>> dir(**h)
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188 Traceback (most recent call last):
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189 ...
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190 TypeError: dir() argument after ** must be a mapping, not function
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191
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192 >>> None(**h)
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193 Traceback (most recent call last):
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194 ...
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195 TypeError: NoneType object argument after ** must be a mapping, \
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196 not function
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197
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198 >>> dir(b=1, **{'b': 1})
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199 Traceback (most recent call last):
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200 ...
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201 TypeError: dir() got multiple values for keyword argument 'b'
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202
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203 Another helper function
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204
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205 >>> def f2(*a, **b):
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206 ... return a, b
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207
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208
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209 >>> d = {}
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210 >>> for i in xrange(512):
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211 ... key = 'k%d' % i
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212 ... d[key] = i
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213 >>> a, b = f2(1, *(2,3), **d)
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214 >>> len(a), len(b), b == d
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215 (3, 512, True)
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216
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217 >>> class Foo:
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218 ... def method(self, arg1, arg2):
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219 ... return arg1+arg2
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220
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221 >>> x = Foo()
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222 >>> Foo.method(*(x, 1, 2))
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223 3
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224 >>> Foo.method(x, *(1, 2))
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225 3
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226 >>> Foo.method(*(1, 2, 3))
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227 Traceback (most recent call last):
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228 ...
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229 TypeError: unbound method method() must be called with Foo instance as \
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230 first argument (got int instance instead)
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231
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232 >>> Foo.method(1, *[2, 3])
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233 Traceback (most recent call last):
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234 ...
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235 TypeError: unbound method method() must be called with Foo instance as \
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236 first argument (got int instance instead)
15364
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237
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238 A PyCFunction that takes only positional parameters shoud allow an
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239 empty keyword dictionary to pass without a complaint, but raise a
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240 TypeError if te dictionary is not empty
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241
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242 >>> try:
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243 ... silence = id(1, *{})
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244 ... True
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245 ... except:
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246 ... False
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247 True
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248
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249 >>> id(1, **{'foo': 1})
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250 Traceback (most recent call last):
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251 ...
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252 TypeError: id() takes no keyword arguments
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253
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254 """
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255
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256 import unittest
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257 from test import test_support
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258
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259
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260 class UnicodeKeywordArgsTest(unittest.TestCase):
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261
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262 def test_unicode_keywords(self):
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263 def f(a):
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264 return a
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265 self.assertEqual(f(**{u'a': 4}), 4)
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266 self.assertRaises(TypeError, f, **{u'stören': 4})
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267 self.assertRaises(TypeError, f, **{u'someLongString':2})
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268 try:
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269 f(a=4, **{u'a': 4})
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270 except TypeError:
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271 pass
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272 else:
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273 self.fail("duplicate arguments didn't raise")
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274
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275
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276 def test_main():
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277 from test import test_extcall # self import
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278 test_support.run_doctest(test_extcall, True)
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279 test_support.run_unittest(UnicodeKeywordArgsTest)
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280
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281 if __name__ == '__main__':
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282 test_main()