Closing a program using terminal from python

Question

I have a function that uses Xfoil to process a data file. However I am trying to tidy up some loose ends. As I am running OS X 10.8.2, Xfoil uses X11 (running as XQuartz) to create its graphs etc. I would like my function to also close the XQuartz app after it has finished so I am trying:

os.system("""'echo osascript -e 'tell application "XQuartz" to quit'""")

but am having no luck. I am using triple double-inverted commas to take the whole thing as a string and os is imported. I believe "osascript -e 'tell application "XQuartz" to quit'" is an Apple Script which I am trying to use with the echo function.

Martijn Pieters · Accepted Answer · 2013-02-18 18:34:25Z

4

You are running the wrong command; you are using echo instead of osascript directly, and your single quotes contained in the command are not balanced (you have 3 of them).

It'll be easier to use the subprocess module instead:

import subprocess

subprocess.call(['osascript', '-e', 'tell application "XQuartz" to quit'])

Because subprocess takes a list of process arguments, you don't have to worry (much) about quoting.

edited Feb 18, 2013 at 18:34

answered Feb 18, 2013 at 18:15

Martijn Pieters

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