Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_symtable.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents a0f43f4481e0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """
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2 Test the API of the symtable module.
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3 """
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4 import symtable
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5 import unittest
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6
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7 from test import test_support
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8
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9
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10 TEST_CODE = """
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11 import sys
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12
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13 glob = 42
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14
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15 class Mine:
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16 instance_var = 24
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17 def a_method(p1, p2):
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18 pass
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19
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20 def spam(a, b, *var, **kw):
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21 global bar
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22 bar = 47
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23 x = 23
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24 glob
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25 def internal():
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26 return x
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27 return internal
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28
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29 def foo():
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30 exec 'm'
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31 from sys import *
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32
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33 def namespace_test(): pass
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34 def namespace_test(): pass
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35 """
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36
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37
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38 def find_block(block, name):
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39 for ch in block.get_children():
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40 if ch.get_name() == name:
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41 return ch
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42
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43
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44 class SymtableTest(unittest.TestCase):
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45
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46 with test_support.check_warnings(
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47 ("import \* only allowed at module level", SyntaxWarning)):
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48 top = symtable.symtable(TEST_CODE, "?", "exec")
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49 # These correspond to scopes in TEST_CODE
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50 Mine = find_block(top, "Mine")
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51 a_method = find_block(Mine, "a_method")
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52 spam = find_block(top, "spam")
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53 internal = find_block(spam, "internal")
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54 foo = find_block(top, "foo")
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55
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56 def test_type(self):
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57 self.assertEqual(self.top.get_type(), "module")
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58 self.assertEqual(self.Mine.get_type(), "class")
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59 self.assertEqual(self.a_method.get_type(), "function")
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60 self.assertEqual(self.spam.get_type(), "function")
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61 self.assertEqual(self.internal.get_type(), "function")
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62
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63 def test_optimized(self):
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64 self.assertFalse(self.top.is_optimized())
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65 self.assertFalse(self.top.has_exec())
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66 self.assertFalse(self.top.has_import_star())
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67
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68 self.assertTrue(self.spam.is_optimized())
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69
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70 self.assertFalse(self.foo.is_optimized())
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71 self.assertTrue(self.foo.has_exec())
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72 self.assertTrue(self.foo.has_import_star())
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73
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74 def test_nested(self):
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75 self.assertFalse(self.top.is_nested())
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76 self.assertFalse(self.Mine.is_nested())
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77 self.assertFalse(self.spam.is_nested())
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78 self.assertTrue(self.internal.is_nested())
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79
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80 def test_children(self):
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81 self.assertTrue(self.top.has_children())
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82 self.assertTrue(self.Mine.has_children())
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83 self.assertFalse(self.foo.has_children())
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84
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85 def test_lineno(self):
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86 self.assertEqual(self.top.get_lineno(), 0)
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87 self.assertEqual(self.spam.get_lineno(), 11)
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88
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89 def test_function_info(self):
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90 func = self.spam
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91 self.assertEqual(sorted(func.get_parameters()), ["a", "b", "kw", "var"])
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92 expected = ["a", "b", "internal", "kw", "var", "x"]
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93 self.assertEqual(sorted(func.get_locals()), expected)
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94 self.assertEqual(sorted(func.get_globals()), ["bar", "glob"])
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95 self.assertEqual(self.internal.get_frees(), ("x",))
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96
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97 def test_globals(self):
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98 self.assertTrue(self.spam.lookup("glob").is_global())
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99 self.assertFalse(self.spam.lookup("glob").is_declared_global())
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100 self.assertTrue(self.spam.lookup("bar").is_global())
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101 self.assertTrue(self.spam.lookup("bar").is_declared_global())
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102 self.assertFalse(self.internal.lookup("x").is_global())
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103 self.assertFalse(self.Mine.lookup("instance_var").is_global())
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104
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105 def test_local(self):
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106 self.assertTrue(self.spam.lookup("x").is_local())
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107 self.assertFalse(self.internal.lookup("x").is_local())
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108
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109 def test_referenced(self):
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110 self.assertTrue(self.internal.lookup("x").is_referenced())
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111 self.assertTrue(self.spam.lookup("internal").is_referenced())
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112 self.assertFalse(self.spam.lookup("x").is_referenced())
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113
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114 def test_parameters(self):
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115 for sym in ("a", "var", "kw"):
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116 self.assertTrue(self.spam.lookup(sym).is_parameter())
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117 self.assertFalse(self.spam.lookup("x").is_parameter())
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118
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119 def test_symbol_lookup(self):
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120 self.assertEqual(len(self.top.get_identifiers()),
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121 len(self.top.get_symbols()))
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122
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123 self.assertRaises(KeyError, self.top.lookup, "not_here")
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124
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125 def test_namespaces(self):
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126 self.assertTrue(self.top.lookup("Mine").is_namespace())
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127 self.assertTrue(self.Mine.lookup("a_method").is_namespace())
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128 self.assertTrue(self.top.lookup("spam").is_namespace())
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129 self.assertTrue(self.spam.lookup("internal").is_namespace())
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130 self.assertTrue(self.top.lookup("namespace_test").is_namespace())
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131 self.assertFalse(self.spam.lookup("x").is_namespace())
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132
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133 self.assertTrue(self.top.lookup("spam").get_namespace() is self.spam)
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134 ns_test = self.top.lookup("namespace_test")
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135 self.assertEqual(len(ns_test.get_namespaces()), 2)
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136 self.assertRaises(ValueError, ns_test.get_namespace)
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137
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138 def test_assigned(self):
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139 self.assertTrue(self.spam.lookup("x").is_assigned())
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140 self.assertTrue(self.spam.lookup("bar").is_assigned())
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141 self.assertTrue(self.top.lookup("spam").is_assigned())
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142 self.assertTrue(self.Mine.lookup("a_method").is_assigned())
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143 self.assertFalse(self.internal.lookup("x").is_assigned())
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144
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145 def test_imported(self):
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146 self.assertTrue(self.top.lookup("sys").is_imported())
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147
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148 def test_name(self):
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149 self.assertEqual(self.top.get_name(), "top")
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150 self.assertEqual(self.spam.get_name(), "spam")
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151 self.assertEqual(self.spam.lookup("x").get_name(), "x")
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152 self.assertEqual(self.Mine.get_name(), "Mine")
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153
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154 def test_class_info(self):
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155 self.assertEqual(self.Mine.get_methods(), ('a_method',))
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156
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157 def test_filename_correct(self):
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158 ### Bug tickler: SyntaxError file name correct whether error raised
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159 ### while parsing or building symbol table.
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160 def checkfilename(brokencode):
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161 try:
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162 symtable.symtable(brokencode, "spam", "exec")
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163 except SyntaxError as e:
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164 self.assertEqual(e.filename, "spam")
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165 else:
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166 self.fail("no SyntaxError for %r" % (brokencode,))
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167 checkfilename("def f(x): foo)(") # parse-time
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168 checkfilename("def f(x): global x") # symtable-build-time
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169
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170 def test_eval(self):
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171 symbols = symtable.symtable("42", "?", "eval")
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172
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173 def test_single(self):
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174 symbols = symtable.symtable("42", "?", "single")
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175
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176 def test_exec(self):
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177 symbols = symtable.symtable("def f(x): return x", "?", "exec")
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178
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179
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180 def test_main():
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181 test_support.run_unittest(SymtableTest)
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182
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183 if __name__ == '__main__':
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184 test_main()