Catch an error from command line Python -

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i need catch error command line without print error message on screen. when occurs need give command run.

this now:

hyst_cmd = "si viewhistory ..." process = subprocess.popen(hyst_cmd, stdout=subprocess.pipe) hyst = process.stdout.read().splitlines()

when projects receive error message, on screen.

sorry english!

according official document, common exception popen in subprocess oserror.

to catch error, can try following approach:

hyst_cmd = "si viewhistory ..."  try:     process = subprocess.popen(hyst_cmd, stdout=subprocess.pipe)     hyst = process.stdout.read().splitlines()  except oserror:     <write_log_file or other action.>

for more information, can check link below:
subprocess exception


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