BZ2File(buffering=None) does not emit deprecation warning, deprecation version not documented.

[Carreau]

BPO	33487
Nosy	@gpshead, @serhiy-storchaka, @Carreau
PRs	bpo-33487: improve BZ2File Deprecation and documentation. #6785

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2018-09-11.01:16:38.044>
created_at = <Date 2018-05-13.21:42:24.294>
labels = ['3.8']
title = 'BZ2File(buffering=None) does not emit deprecation warning, deprecation version not documented.'
updated_at = <Date 2018-09-11.01:16:38.042>
user = 'https://github.com/Carreau'

bugs.python.org fields:

activity = <Date 2018-09-11.01:16:38.042>
actor = 'gregory.p.smith'
assignee = 'none'
closed = True
closed_date = <Date 2018-09-11.01:16:38.044>
closer = 'gregory.p.smith'
components = []
creation = <Date 2018-05-13.21:42:24.294>
creator = 'mbussonn'
dependencies = []
files = []
hgrepos = []
issue_num = 33487
keywords = ['patch']
message_count = 5.0
messages = ['316482', '316796', '316818', '324972', '324973']
nosy_count = 3.0
nosy_names = ['gregory.p.smith', 'serhiy.storchaka', 'mbussonn']
pr_nums = ['6785']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue33487'
versions = ['Python 3.8']

[Carreau]

BZ2File(buffering=None) should emit a deprecation warning as the argument is deprecated.

The deprecation message and documentation should say since when it is deprecated. (AFAICT since 3.3)

[serhiy-storchaka]

Actually it is ignored since 3.0.

[Carreau]

Actually it is ignored since 3.0.

My bad, I have likely misread the history. PR updated.

[gpshead]

New changeset ffa198c by Gregory P. Smith (Matthias Bussonnier) in branch 'master':
bpo-33487: improve BZ2File Deprecation and documentation. (GH-6785)
ffa198c

[gpshead]

thanks!