[New-bugs-announce] [issue41590] "zip()" very slowly for this

[email0.ya]

New submission from email0.ya <email0.ya at yandex.com>:

https://docs.python.org/3.9/tutorial/datastructures.html
Nested List Comprehensions

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assignee: docs at python
components: Documentation
files: nested_lists.py
messages: 375662
nosy: docs at python, email0.ya
priority: normal
severity: normal
status: open
title: "zip()" very slowly for this
type: performance
versions: Python 3.9
Added file: https://bugs.python.org/file49405/nested_lists.py

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41590>
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