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msztolcman/python-mutable-structures-in-function-definition.py

Created June 27, 2019 05:19
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python-mutable-structures-in-function-definition.py
#!/usr/bin/env python
class Test:
@classmethod
def test(cls, data=[]):
data.append(1)
print(data)
Test.test()
t = Test()
t.test()
Test.test()
t.test()
# result:
# [1]
# [1, 1]
# [1, 1, 1]
# [1, 1, 1, 1]
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