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Posts Tagged ‘subprocess’
Execute command, show its output, get its exit code
March 3, 2013
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Problem
You want to execute an external program, show its output, and get its exit code at the end.
Solution
import shlex from subprocess import Popen, PIPE cmd = "..." process = Popen(shlex.split(cmd), stdout=PIPE) process.communicate() # execute it, the output goes to the stdout exit_code = process.wait() # when finished, get the exit code
Example: I used this code with FFmpeg. FFmpeg updates the output on the stdout regularly while doing a conversion. At the end I can ask if the conversion was successful (exit_code == 0) or not.
Categories: python
exit code, ffmpeg, subprocess
Calling external commands
April 28, 2011
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How to call external commands in Python:
Categories: python
external command, subprocess
Python Adventures 