How to use 'python set pop' in Python

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75def 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 """)

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