Remove support of deprecated mode 'U' in zipfile

[serhiy-storchaka]

BPO	27029
Nosy	@Yhg1s, @serhiy-storchaka
Files	zipfile_remove_deprecated.patch zipfile_remove_deprecated2.patch

^{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 = 'https://github.com/serhiy-storchaka'
closed_at = <Date 2016-06-11.16:37:20.486>
created_at = <Date 2016-05-15.18:23:22.853>
labels = ['type-feature', 'library']
title = "Remove support of deprecated mode 'U' in zipfile"
updated_at = <Date 2016-06-11.16:37:20.484>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2016-06-11.16:37:20.484>
actor = 'serhiy.storchaka'
assignee = 'serhiy.storchaka'
closed = True
closed_date = <Date 2016-06-11.16:37:20.486>
closer = 'serhiy.storchaka'
components = ['Library (Lib)']
creation = <Date 2016-05-15.18:23:22.853>
creator = 'serhiy.storchaka'
dependencies = []
files = ['42861', '42958']
hgrepos = []
issue_num = 27029
keywords = ['patch']
message_count = 4.0
messages = ['265640', '266178', '268227', '268229']
nosy_count = 4.0
nosy_names = ['twouters', 'alanmcintyre', 'python-dev', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue27029'
versions = ['Python 3.6']

[serhiy-storchaka]

Proposed patch removes support of modes 'U' and 'rU' in zipfile.ZipFile.open. This support was baggy and not consistent with other binary file objects. It was deprecated since Python 3.4.

[serhiy-storchaka]

Updated patch addresses Jim's comments.

[python-dev]

New changeset bf8773b054cb by Serhiy Storchaka in branch 'default':
Issue bpo-27029: Removed deprecated support of universal newlines mode from ZipFile.open().
https://hg.python.org/cpython/rev/bf8773b054cb

[serhiy-storchaka]

Thank you for your review Jim.