Issue 42676: zoneinfo uses locale depending functions for parsing

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This issue has been migrated to GitHub: https://github.com/python/cpython/issues/86842

classification

Title:	zoneinfo uses locale depending functions for parsing
Type:	behavior	Stage:
Components:	Library (Lib)	Versions:	Python 3.10, Python 3.9

process

Status:	open	Resolution:
Dependencies:		Superseder:
Assigned To:		Nosy List:	p-ganssle, serhiy.storchaka
Priority:	normal	Keywords:

Created on 2020-12-18 18:09 by serhiy.storchaka, last changed 2022-04-11 14:59 by admin.

Messages (1)
msg383313 - (view)	Author: Serhiy Storchaka (serhiy.storchaka) *	Date: 2020-12-18 18:09
zoneinfo uses locale depending functions isalpha(), isdigit(), isalnum() to parse data. It may be correct when parse the TZ environment variable (although they do not work with multibytes locale encodings like UTF-8), I think that parsing the content of data files should not rely on current locale. Later the parsed data is decoded implying UTF-8 (for abbr) or ASCII (for numbers).

msg383313 - (view)

Author: Serhiy Storchaka (serhiy.storchaka) * (Python committer)

Date: 2020-12-18 18:09

zoneinfo uses locale depending functions isalpha(), isdigit(), isalnum() to parse data. It may be correct when parse the TZ environment variable (although they do not work with multibytes locale encodings like UTF-8), I think that parsing the content of data files should not rely on current locale. Later the parsed data is decoded implying UTF-8 (for abbr) or ASCII (for numbers).

History
Date	User	Action	Args
2022-04-11 14:59:39	admin	set	github: 86842
2020-12-18 18:09:32	serhiy.storchaka	create