New submission from Cyker Way <cyker...@gmail.com>:
With an inheritance graph like this:
A C
B D (X) A
E
Adding or removing class X in E's parents will change the order of A and C in
E's MRO: EBDAC vs EBDCXA.
I couldn't imagine what would be the "perfect" MRO. However, given X is
completely independent from A and C, this behavior looks strange and
problematic.
----------
components: Interpreter Core
files: mro.py
messages: 358921
nosy: cykerway
priority: normal
severity: normal
status: open
title: Innocuous parent class changes multiple inheritance MRO
type: behavior
versions: Python 3.8
Added file: https://bugs.python.org/file48804/mro.py
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue39145>
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