Return values from one script to another script

Question

I have the following script that will run each script (sequentially) in a directory:

import os

directory = []

for dirpath, dirnames, filenames in os.walk("path\to\scripts"):
    for filename in [f for f in filenames if f.endswith(".py")]:
        directory.append(os.path.join(dirpath, filename))
for entry in directory:
    execfile(entry)
    print x

my scripts look like this:

def script1():
    x = "script 1 ran"
    return x

script1()

When print x is called, it says x is not defined. I'm just curious if there is a way to return values so that the parent script can access the data.

stackoverflow.com/questions/4807680/… check this out.

John Riselvato
– John Riselvato

2011-09-16 18:10:34 +00:00
Commented Sep 16, 2011 at 18:10 — John Riselvato
– John Riselvato, Commented Sep 16, 2011 at 18:10

S.Lott · Accepted Answer · 2011-09-16 18:13:17Z

9

I'm just curious if there is a way to return values so that the parent script can access the data.

This is why you define functions and return values.

Script 1 should include a function.

def main():
    all the various bits of script 1 except the import 
    return x

if __name__ == "__main__":
    x= main()
    print( x )

Works the same as yours, but now can be used elsewhere

Script 2 does this.

import script1
print script1.main()

That's the way one script uses another.

answered Sep 16, 2011 at 18:13

S.Lott

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Comments

Staven · Accepted Answer · 2011-09-16 18:41:04Z

3

You can use the locals argument of execfile(). Write the scripts like this:

def run_script():
    ret_value = 2
    return ret_value

script_ret = run_script()

And in your main script:

script_locals = dict()
execfile("path/to/script", dict(), script_locals)
print(script_locals["script_ret"])

answered Sep 16, 2011 at 18:41

Staven

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Comments

Tom Zych · Accepted Answer · 2011-09-16 18:12:22Z

1

x is local to the script1 function, so it's not visible in the outer scope. If you put the code inside script1 at the top level of the file, it should work.

answered Sep 16, 2011 at 18:12

Tom Zych

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