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import os
import pdb

os.system("ToBuildOrNot.py MSS_sims")

for output in os.system:
     if ToBuildOrNot is True:
         print "The MSS_sims Needs To rebuilt"

     elif ToBuildOrNot is False:
         print "The MSS_sism does NOT Need to be Rebuilt"

     else:
         print "error"
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1 Answer

up vote 2 down vote accepted

Don't invoke a Python script from a Python script by using system, which spawns a whole other interpreter. Just import it. Like this:

import ToBuildOrNot
needsBuild = ToBuildOrNot.run() # or whatever you call your top-level function

Since ToBuildOrNot.py is a script now, make sure the "main" function is protected so it doesn't execute automatically on import. Most people do it this way in Python: What does <if __name__=="__main__":> do?

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thanks very much – Barry Taylor Jun 26 at 15:12
i still am having trouble running the actual program "ToBuildOrNot.py MSS_sims" it still runs just ToBuildOrNot – Barry Taylor Jun 26 at 15:31
You need to define a function like def run(filename) (in my example), and then call it with "MSS_sims" to pass in the filename. – John Zwinck Jun 27 at 12:52

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