please fall back to sequential compilation when concurrent doesn't exist

[doko42]

BPO	23917
Nosy	@brettcannon, @doko42, @PCManticore, @berkerpeksag
Files	issue23917.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/PCManticore'
closed_at = <Date 2015-04-22.06:39:58.012>
created_at = <Date 2015-04-11.22:52:09.499>
labels = ['type-bug', 'library']
title = "please fall back to sequential compilation when concurrent doesn't exist"
updated_at = <Date 2015-04-22.06:39:58.010>
user = 'https://github.com/doko42'

bugs.python.org fields:

activity = <Date 2015-04-22.06:39:58.010>
actor = 'berker.peksag'
assignee = 'Claudiu.Popa'
closed = True
closed_date = <Date 2015-04-22.06:39:58.012>
closer = 'berker.peksag'
components = ['Library (Lib)']
creation = <Date 2015-04-11.22:52:09.499>
creator = 'doko'
dependencies = []
files = ['39132']
hgrepos = []
issue_num = 23917
keywords = ['patch']
message_count = 6.0
messages = ['240507', '240881', '241561', '241655', '241775', '241776']
nosy_count = 5.0
nosy_names = ['brett.cannon', 'doko', 'Claudiu.Popa', 'python-dev', 'berker.peksag']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue23917'
versions = ['Python 3.5']

[doko42]

issue bpo-16104 introduces parallel byte compilation, however the method is now overly strict when workers > 1 and no concurrent support available. Please just fall back to sequential byte compilation in this case.

[PCManticore]

Will do, thanks.

[PCManticore]

Here's the patch.

[brettcannon]

LGTM

[python-dev]

New changeset 572dc6bdc0a3 by Berker Peksag in branch 'default':
Issue bpo-23917: Fall back to sequential compilation when ProcessPoolExecutor doesn't exist.
https://hg.python.org/cpython/rev/572dc6bdc0a3

[berkerpeksag]

Thanks Claudiu.