[issue44216] Bug in class method with optional parameter

[Steven D'Aprano]

Steven D'Aprano <steve+python at pearwood.info> added the comment:

This is not a bug, this is working as the language is designed, and the behaviour occurs for all functions, not just class methods. Default values are only evaluated once, when the function is defined, not every time the function is called.

This is even described in the FAQs:

https://docs.python.org/3/faq/programming.html#id13

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nosy: +steven.daprano
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44216>
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