blocks|key|257634|text|检查你是否可以手动import+_posixsubprocess，子进程尝试在它的代码中导入它，如果它产生了一个异常，这个警告就会产生。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|257635|entityMap^0|9|N|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

check if you can <code>import _posixsubprocess</code> manually, subprocess tries to import this in it's code, if it produces an exception this warning is produced.

blocks|key|257649|text|对我来说，解决方案是执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|257650|pip+uninstall+subprocess32
pip+install+-U+subprocess32|code-block|syntax|javascript|257651|最初，我在尝试导入matplotlib时收到警告|offset|length|style|CODE|257652|Python+2.7.13+(default,+May+16+2017,+12:02:12)+
[GCC+6.2.0+20160901]+on+linux2
Type+"help",+"copyright",+"credits"+or+"license"+for+more+information.
>>>+import+matplotlib
/home/methuselah/.local/lib/python2.7/site-packages/subprocess32.py:472:+RuntimeWarning:+The+_posixsubprocess+module+is+not+being+used.+Child+process+reliability+may+suffer+if+your+program+uses+threads.
++"program+uses+threads.",+RuntimeWarning)
>>>|257653|重新安装subprocess32后，警告消失：|257654|Python+2.7.13+(default,+May+16+2017,+12:02:12)+
[GCC+6.2.0+20160901]+on+linux2
Type+"help",+"copyright",+"credits"+or+"license"+for+more+information.
>>>+import+matplotlib
>>>+|257655|entityMap^0|0|0|9|A|0|0|4|C|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@$I|11|J|12|K|L]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|T|$]]

The solution for me was to do the following:

<pre><code>pip uninstall subprocess32
pip install -U subprocess32
</code></pre>

Intially, I was getting a warning when I tried to import <code>matplotlib</code>:

<pre><code>Python 2.7.13 (default, May 16 2017, 12:02:12) 
[GCC 6.2.0 20160901] on linux2
Type "help", "copyright", "credits" or "license" for more information.
&gt;&gt;&gt; import matplotlib
/home/methuselah/.local/lib/python2.7/site-packages/subprocess32.py:472: RuntimeWarning: The _posixsubprocess module is not being used. Child process reliability may suffer if your program uses threads.
 "program uses threads.", RuntimeWarning)
&gt;&gt;&gt;
</code></pre>

After reinstalling <code>subprocess32</code>, the warning goes away:

<pre><code>Python 2.7.13 (default, May 16 2017, 12:02:12) 
[GCC 6.2.0 20160901] on linux2
Type "help", "copyright", "credits" or "license" for more information.
&gt;&gt;&gt; import matplotlib
&gt;&gt;&gt; 
</code></pre>

blocks|key|474205|text|我和conda一起安装的工具也有同样的问题。事实证明，来自pip的subprocess32有一种冲突版本。运行下面的代码就成功了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|474206|pip+uninstall+subprocess32
conda+install+-c+conda-forge+subprocess32+|code-block|syntax|javascript|474207|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I had the same issue with a tool that was installed with conda. Turned out that there was kind of a conflicting version of subprocess32 that came from pip. Running this did the trick:

<pre><code>pip uninstall subprocess32
conda install -c conda-forge subprocess32 
</code></pre>

blocks|key|474239|text|解除PYTHONHOME已经为我修复了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|474240|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

unsetting PYTHONHOME has fixed this issue for me.

blocks|key|257794|text|如果您正在使用多个版本的Python，则可能会出现这种情况。您需要为每个程序指定要使用的python的正确版本。例如，我需要为miniconda使用python+3.7，但是mendeleydesktop声称这个版本有问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|257795|_posixsubproces及其位置也有问题|257796|因此，我使用python2.7而不是在phyton环境中运行程序，它解决了问题。希望能有所帮助。干杯，弗洛尔|257797|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

It could be if you have more than a version of Python in use.
you need to specify the correct version of python to use for each programme.
For example, I need python 3.7 for miniconda, but mendeleydesktop claims for trouble with this version:
also problem with _posixsubproces and its location
so instead of run the program in a phyton enviroment only I use python2.7, and it solve the problem.
Hope it helps.
Cheers,
Flor

Hi im running a subprocess with threads trough a python wrapper and I get the following warning when I use the subprocess module.

"The _posixsubprocess module is not being used, Child process reliability may suffer if your program uses threads."

What dose this mean?
How can I get rid of it?

Python Error The _posixsubprocess module is not being used

Python

您好，我通过python包装器运行一个带有线程的子进程，当我使用子进程模块时，收到以下警告。未使用_posixsubprocess模块，如果您的程序使用线程，则子进程的可靠性可能会受到影响。这是什么意思？我怎样才能摆脱它？

问Python错误_posixsubprocess模块未被使用
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