I have some python code, from which I want to call another program. This program will
- Print some output to
STDOUT
- Write a file to disk
Using call
I get the following behavior;
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
This happens regardless if if the arguments are split into a list or not;
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
I can call this same command from the my terminal
./tango_x86_64_release VTS1 ct="N" nt="N" ph="7.2" te="303" io="0.02" seq="MKHPYEEFPTGSKSPYNMSRGAHPGAV"
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 subprocess.Popen()
gives an OSError
;
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
Any help greatly appreciated