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Avoid deadlock with subprocess #128

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@coreywright coreywright commented Aug 22, 2017

Heed Python's subprocess module documentation warnings about deadlock
when using PIPE for a Popen object's stderr with Popen.wait() and
Popen.stderr.read() and use Popen.communicate() instead.

Fixes #126.

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coreywright commented Aug 22, 2017

the pep8 violation ./tests/test_imports.py:13:1: E305 expected 2 blank lines after class or function definition, found 1 is a "pre-existing condition" (disclaimer: not covered under the terms of this PR's insurance policy), but resolved by #127.

Heed Python's subprocess module documentation warnings about deadlock
when using PIPE for a Popen object's stderr with Popen.wait() and
Popen.stderr.read() and use Popen.communicate() instead.

Fixes major#126.
@coreywright coreywright force-pushed the avoid_deadlock_with_subprocess branch from 3af09c4 to 67146a4 Compare August 22, 2017 18:33
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Codecov Report

Merging #128 into master will not change coverage.
The diff coverage is 100%.

Impacted file tree graph

@@          Coverage Diff          @@
##           master   #128   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           6      6           
  Lines         392    391    -1     
  Branches       82     82           
=====================================
- Hits          392    391    -1
Impacted Files Coverage Δ
supernova/supernova.py 100% <100%> (ø) ⬆️

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coreywright commented Aug 22, 2017

force pushed up a new commit to clarify where these warnings, as referenced in the commit message, exist (ie Python's subprocess module documentation).

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