Mutable objects and function parameters

October 5, 2005 at 1:06 pm by Wolfram · Filed under Programming, Python

It can be dangerous using mutable objects as default values for function parameters in Python!
Just remember: Default values are created exactly once, when the function is defined.
And: A list is a mutable object!
It really helps reading through the FAQ every once in a while :-) … Why are default values shared between objects?

1 Comment »

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    March 29, 2006 at 7:52 pm

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