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POPython - unable to call system command
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Id
17372365
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17372491
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ClosedDate
CommentCount
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CommunityOwnedDate
CreationDate
2013-06-28T19:36:40.120
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LastActivityDate
2013-06-28T19:46:09.713
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PostTypeId
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824
LastEditorDisplayName
text
Body
I have some python code, from which I want to call another program. This program will <ul> <li>Print some output to <code>STDOUT</code></li> <li>Write a file to disk</li> </ul> Using <code>call</code> I get the following behavior; <pre><code>from subprocess import call call(['./tango_x86_64_release', 'VTS1 ct="N" nt="N" ph="7.2" te="303" io="0.02" seq="MKHPYEEFPTGSKSPYNMSRGAHPGAV"']) 34, File not properly written, try writing it up again, 1 </code></pre> This happens regardless if if the arguments are split into a list or not; <pre><code>call(['./tango_x86_64_release', 'VTS1', 'ct="N"', 'nt="N"', 'ph="7.2"', 'te="303"', 'io="0.02"', 'seq="MKHPYEEFPTGSKSPYNMSRGAHPGAV"']) 34, File not properly written, try writing it up again, 1 </code></pre> I can call this same command from the my terminal <pre><code>./tango_x86_64_release VTS1 ct="N" nt="N" ph="7.2" te="303" io="0.02" seq="MKHPYEEFPTGSKSPYNMSRGAHPGAV" </code></pre> Which works and gives an exit status of 0. It seems like its the writing to disk which is causing issues, if I break the command then I get the appropriate warning message (i.e. remove an argument, it warns me that the argument is missing). Using <code>subprocess.Popen()</code> gives an <code>OSError</code>; <pre><code>import subprocess as sub output = sub.Popen('./tango_x86_64_release VTS1 ct="N" nt="N" ph="7.2" te="303" io="0.02" seq="MKHPYEEFPTGSKSPYNMSRGAHPGAV"', stdout=sub.PIPE, stderr=sub.PIPE) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib64/python2.7/subprocess.py", line 679, in __init__ errread, errwrite) File "/usr/lib64/python2.7/subprocess.py", line 1249, in _execute_child raise child_exception OSError: [Errno 2] No such file or directory </code></pre> Any help greatly appreciated
Tags
<python><subprocess>
Title
Python - unable to call system command
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