Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_opcodes.py @ 87690:66c1c9f32567 default tip

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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>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 3c9232a684ae
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # Python test set -- part 2, opcodes
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2
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3 from test.support import run_unittest
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4 import unittest
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5
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6 class OpcodeTest(unittest.TestCase):
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7
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8 def test_try_inside_for_loop(self):
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9 n = 0
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10 for i in range(10):
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11 n = n+i
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12 try: 1/0
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13 except NameError: pass
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14 except ZeroDivisionError: pass
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15 except TypeError: pass
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16 try: pass
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17 except: pass
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18 try: pass
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19 finally: pass
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20 n = n+i
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21 if n != 90:
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22 self.fail('try inside for')
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23
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24 def test_raise_class_exceptions(self):
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25
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26 class AClass(Exception): pass
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27 class BClass(AClass): pass
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28 class CClass(Exception): pass
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29 class DClass(AClass):
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30 def __init__(self, ignore):
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31 pass
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32
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33 try: raise AClass()
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34 except: pass
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35
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36 try: raise AClass()
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37 except AClass: pass
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38
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39 try: raise BClass()
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40 except AClass: pass
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41
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42 try: raise BClass()
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43 except CClass: self.fail()
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44 except: pass
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45
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46 a = AClass()
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47 b = BClass()
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48
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49 try:
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50 raise b
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51 except AClass as v:
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52 self.assertEqual(v, b)
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53 else:
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54 self.fail("no exception")
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55
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56 # not enough arguments
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57 ##try: raise BClass, a
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58 ##except TypeError: pass
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59 ##else: self.fail("no exception")
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60
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61 try: raise DClass(a)
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62 except DClass as v:
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63 self.assertIsInstance(v, DClass)
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64 else:
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65 self.fail("no exception")
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66
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67 def test_compare_function_objects(self):
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68
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69 f = eval('lambda: None')
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70 g = eval('lambda: None')
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71 self.assertNotEqual(f, g)
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72
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73 f = eval('lambda a: a')
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74 g = eval('lambda a: a')
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75 self.assertNotEqual(f, g)
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76
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77 f = eval('lambda a=1: a')
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78 g = eval('lambda a=1: a')
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79 self.assertNotEqual(f, g)
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80
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81 f = eval('lambda: 0')
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82 g = eval('lambda: 1')
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83 self.assertNotEqual(f, g)
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84
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85 f = eval('lambda: None')
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86 g = eval('lambda a: None')
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87 self.assertNotEqual(f, g)
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88
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89 f = eval('lambda a: None')
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90 g = eval('lambda b: None')
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91 self.assertNotEqual(f, g)
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92
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93 f = eval('lambda a: None')
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94 g = eval('lambda a=None: None')
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95 self.assertNotEqual(f, g)
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96
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97 f = eval('lambda a=0: None')
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98 g = eval('lambda a=1: None')
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99 self.assertNotEqual(f, g)
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100
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101 def test_modulo_of_string_subclasses(self):
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102 class MyString(str):
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103 def __mod__(self, value):
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104 return 42
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105 self.assertEqual(MyString() % 3, 42)
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106
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107
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108 def test_main():
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109 run_unittest(OpcodeTest)
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110
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111 if __name__ == '__main__':
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112 test_main()