Re: calling python script from exported bash function, module import fails

[Ole Tange]

On Thu, Dec 22, 2016 at 5:28 PM, Benjamin Leutner
<benjamin.leutner@uni-wuerzburg.de> wrote:

> Here's the modified example:
>
> function FUN {
> echo -e "\n----- Try number: ${1}  -----"
> echo "Host: $(hostname), Level:  $SHLVL"
> python -c "
> import setuptools
> print 'import succesful'"
> }
> export -f FUN
>
> # without env
> parallel 'FUN {}' ::: 1
>
> # with env for function
> parallel --env FUN 'FUN {}' ::: 2
>
> # with env for everything
> parallel --env _ 'FUN {}' ::: 3

All work for me. So this is a local problem on your machine.

Therefore see if you can reproduce the error on one of these
VirtualBox images:
http://sourceforge.net/projects/virtualboximage/files/
http://www.osboxes.org/virtualbox-images/

> 1) is fine, 2) and 3) give me :
> Traceback (most recent call last):
>   File "<string>", line 2, in <module>
>   File "/usr/lib/python2.7/dist-packages/setuptools/__init__.py", line 14,
> in <module>
>     from setuptools.extension import Extension
>   File "/usr/lib/python2.7/dist-packages/setuptools/extension.py", line 10,
> in <module>
>     from .dist import _get_unpatched
>   File "/usr/lib/python2.7/dist-packages/setuptools/dist.py", line 22, in
> <module>
>     from setuptools import windows_support
>   File "/usr/lib/python2.7/dist-packages/setuptools/windows_support.py",
> line 11, in <module>
>     @windows_only
>   File "/usr/lib/python2.7/dist-packages/setuptools/windows_support.py",
> line 6, in windows_only
>     if platform.system() != 'Windows':
>   File "/usr/lib/python2.7/platform.py", line 1286, in system
>     return uname()[0]
>   File "/usr/lib/python2.7/platform.py", line 1253, in uname
>     processor = _syscmd_uname('-p','')
>   File "/usr/lib/python2.7/platform.py", line 988, in _syscmd_uname
>     rc = f.close()
> IOError: [Errno 10] No child processes

The traceback indicates Python tries to run system("uname", "-p"), but
fails due to no child process.


/Ole