Multiprocessing issue when redirecting stdout about flake8 HOT 8 CLOSED

In GitLab by @sigmavirus24 on Dec 22, 2014, 12:56

So I think this is actually entirely due to the output being interleaved. Thanks to your excellent steps to reproduce this, I can confirm that I see lines like

testcase.py:590:1: F821 undef821 undefined name 'test422'

And then later

ined name 'test589'

I'll have a look at how our reporters work and if there's a way to prevent this without hurting performance

from flake8.

In GitLab by @sigmavirus24 on Dec 26, 2014, 19:38

mentioned in merge request !15

from flake8.

In GitLab by @methane on Dec 27, 2014, 01:01

This can be happen because stdout is block buffered when not stdout.isatty().
os.write() is the most safe way.
But flush() for each line can be enough and easy to achieve Python 2.5~ compatibility.

from flake8.

In GitLab by @methane on Dec 27, 2014, 01:06

mentioned in merge request !16

from flake8.

In GitLab by @methane on Dec 27, 2014, 02:31

PyCQA/pycodestyle#363

from flake8.

In GitLab by @sigmavirus24 on Dec 27, 2014, 07:00

Status changed to closed by commit a239fe7

from flake8.

In GitLab by @sigmavirus24 on Dec 27, 2014, 07:04

Thanks for reporting this @conkiztador and your help @methane

from flake8.

In GitLab by @sigmavirus24 on Dec 27, 2014, 07:33

mentioned in commit 6b27451

from flake8.