Add support of checked hash-based pycs in zipimport

[serhiy-storchaka]

BPO	34726
Nosy	@Yhg1s, @warsaw, @brettcannon, @ncoghlan, @mcepl, @ericsnowcurrently, @serhiy-storchaka
PRs	bpo-34726: Fix handling of hash-based pycs in zipimport #10327

^{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 2018-11-07.18:35:30.166>
created_at = <Date 2018-09-18.19:49:50.930>
labels = ['3.8', 'type-feature', 'library']
title = 'Add support of checked hash-based pycs in zipimport'
updated_at = <Date 2018-11-07.18:35:30.165>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2018-11-07.18:35:30.165>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2018-11-07.18:35:30.166>
closer = 'serhiy.storchaka'
components = ['Library (Lib)']
creation = <Date 2018-09-18.19:49:50.930>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 34726
keywords = ['patch']
message_count = 3.0
messages = ['325675', '325767', '329430']
nosy_count = 7.0
nosy_names = ['twouters', 'barry', 'brett.cannon', 'ncoghlan', 'mcepl', 'eric.snow', 'serhiy.storchaka']
pr_nums = ['10327']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue34726'
versions = ['Python 3.8']

[serhiy-storchaka]

Currently zipimport refuses to handle checked hash-based pycs (PEP-552).

[serhiy-storchaka]

bpo-23734 may be related.

[serhiy-storchaka]

New changeset a6e956b by Serhiy Storchaka (Elvis Pranskevichus) in branch 'master':
bpo-34726: Fix handling of hash-based pycs in zipimport. (GH-10327)
a6e956b