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75 def test_pop(self): 76 # Test empty set popping. 77 self.assertCodeExecution(""" 78 x = set() 79 try: 80 x.pop() 81 except KeyError as err: 82 print(err) 83 """) 84 85 # Test populated set popping. 86 self.assertCodeExecution(""" 87 x = {'a'} 88 print(len(x) == 1) 89 x.pop() 90 print(len(x) == set()) 91 """) 92 93 # Test popping returns from set. 94 self.assertCodeExecution(""" 95 x = {'a', 'b', 'c', 'd', 'e'} 96 y = x.pop() 97 print(y in x) 98 """)