New submission from Chrome <expo....@gmail.com>:

`lib2to3.refactor.RefactoringTool.traverse_by` do a pre-order or post-order, 
and apply every candidate fixer to each node when traverse the tree. when a 
prior fixer add a new node that contains children, these children won't be 
visited by posterior fixers.

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components: 2to3 (2.x to 3.x conversion tool)
messages: 376035
nosy: chrome
priority: normal
severity: normal
status: open
title: new Node may not visited in lib2to3.refactor.RefactoringTool.traverse_by
type: behavior
versions: Python 3.10

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue41655>
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