bz2: Remove deprecated buffering parameter of bz2.BZ2File

[vstinner]

BPO	39357
Nosy	@vstinner, @tirkarthi
PRs	bpo-39357: Remove buffering parameter of bz2.BZ2File #18028 bpo-39357: Update bz2 docstring: remove buffering #18036

^{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 2020-01-16.14:33:45.500>
created_at = <Date 2020-01-16.10:22:45.861>
labels = ['library', '3.9']
title = 'bz2: Remove deprecated buffering parameter of bz2.BZ2File'
updated_at = <Date 2020-01-17.12:58:51.958>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2020-01-17.12:58:51.958>
actor = 'xtreak'
assignee = 'none'
closed = True
closed_date = <Date 2020-01-16.14:33:45.500>
closer = 'vstinner'
components = ['Library (Lib)']
creation = <Date 2020-01-16.10:22:45.861>
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 39357
keywords = ['patch']
message_count = 6.0
messages = ['360114', '360125', '360168', '360180', '360181', '360183']
nosy_count = 2.0
nosy_names = ['vstinner', 'xtreak']
pr_nums = ['18028', '18036']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue39357'
versions = ['Python 3.9']

[vstinner]

The "buffering" parameter of bz2.BZ2File is deprecated for 12 years.

Using it was emitting a DeprecationWarning since Python 3.0.

Attached PR removes it.

[vstinner]

New changeset 9baf242 by Victor Stinner in branch 'master':
bpo-39357: Remove buffering parameter of bz2.BZ2File (GH-18028)
9baf242

[tirkarthi]

cpython/Lib/bz2.py

Line 50 in 9baf242

buffering is ignored since Python 3.0. Its use is deprecated.

contains similar reference about buffering parameter deprecation like bz2.rst which could also be removed. Thanks.

[vstinner]

New changeset 10fd6b2 by Victor Stinner in branch 'master':
bpo-39357: Update bz2 docstring: remove buffering (GH-18036)
10fd6b2

[vstinner]

Thanks Karthikeyan, I forgot about the docstring.

[tirkarthi]

Thanks for the fix Victor :)