Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_code.py @ 64166:d0e9febfa00a 3.1

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Merged revisions 84172 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ........ r84172 | martin.v.loewis | 2010-08-18 18:12:23 +0200 (Mi, 18 Aug 2010) | 2 lines Restore GIL in nis_cat in case of error. ........
author Martin v. Löwis <martin@v.loewis.de>
date Thu, 19 Aug 2010 09:03:03 +0000
parents 9c930a32cebb
children 79718ee03986
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1 """This module includes tests of the code object representation.
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2
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3 >>> def f(x):
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4 ... def g(y):
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5 ... return x + y
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6 ... return g
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7 ...
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8
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9 >>> dump(f.__code__)
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10 name: f
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11 argcount: 1
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12 kwonlyargcount: 0
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13 names: ()
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14 varnames: ('x', 'g')
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15 cellvars: ('x',)
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16 freevars: ()
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17 nlocals: 2
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18 flags: 3
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19 consts: ('None', '<code object g>')
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20
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21 >>> dump(f(4).__code__)
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22 name: g
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23 argcount: 1
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24 kwonlyargcount: 0
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25 names: ()
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26 varnames: ('y',)
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27 cellvars: ()
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28 freevars: ('x',)
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29 nlocals: 1
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30 flags: 19
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31 consts: ('None',)
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32
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33 >>> def h(x, y):
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34 ... a = x + y
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35 ... b = x - y
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36 ... c = a * b
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37 ... return c
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38 ...
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39
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40 >>> dump(h.__code__)
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41 name: h
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42 argcount: 2
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43 kwonlyargcount: 0
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44 names: ()
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45 varnames: ('x', 'y', 'a', 'b', 'c')
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46 cellvars: ()
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47 freevars: ()
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48 nlocals: 5
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49 flags: 67
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50 consts: ('None',)
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51
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52 >>> def attrs(obj):
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53 ... print(obj.attr1)
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54 ... print(obj.attr2)
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55 ... print(obj.attr3)
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56
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57 >>> dump(attrs.__code__)
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58 name: attrs
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59 argcount: 1
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60 kwonlyargcount: 0
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61 names: ('print', 'attr1', 'attr2', 'attr3')
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62 varnames: ('obj',)
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63 cellvars: ()
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64 freevars: ()
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65 nlocals: 1
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66 flags: 67
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67 consts: ('None',)
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68
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69 >>> def optimize_away():
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70 ... 'doc string'
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71 ... 'not a docstring'
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72 ... 53
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73 ... 0x53
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74
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75 >>> dump(optimize_away.__code__)
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76 name: optimize_away
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77 argcount: 0
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78 kwonlyargcount: 0
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79 names: ()
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80 varnames: ()
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81 cellvars: ()
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82 freevars: ()
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83 nlocals: 0
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84 flags: 67
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85 consts: ("'doc string'", 'None')
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86
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87 >>> def keywordonly_args(a,b,*,k1):
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88 ... return a,b,k1
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89 ...
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90
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91 >>> dump(keywordonly_args.__code__)
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92 name: keywordonly_args
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93 argcount: 2
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94 kwonlyargcount: 1
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95 names: ()
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96 varnames: ('a', 'b', 'k1')
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97 cellvars: ()
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98 freevars: ()
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99 nlocals: 3
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100 flags: 67
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101 consts: ('None',)
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102
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103 """
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104
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105 def consts(t):
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106 """Yield a doctest-safe sequence of object reprs."""
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107 for elt in t:
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108 r = repr(elt)
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109 if r.startswith("<code object"):
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110 yield "<code object %s>" % elt.co_name
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111 else:
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112 yield r
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113
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114 def dump(co):
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115 """Print out a text representation of a code object."""
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116 for attr in ["name", "argcount", "kwonlyargcount", "names", "varnames",
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117 "cellvars", "freevars", "nlocals", "flags"]:
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118 print("%s: %s" % (attr, getattr(co, "co_" + attr)))
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119 print("consts:", tuple(consts(co.co_consts)))
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120
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121 def test_main(verbose=None):
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122 from test.support import run_doctest
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123 from test import test_code
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124 run_doctest(test_code, verbose)
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127 if __name__ == '__main__':
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128 test_main()