Python - run another python script with current environment passing the arguments over and getting the printed print output

Question

A little bit of an ugly question, but I didn't find existing SO posts which cover it.

Right now I need to use an existing python tool available on this github

This is a rather big piece of code with a lot of dependencies which I don't want to mess with. In a nutshell one can run its module by passing the command line arguments, for example:

timesearch.py timesearch -r "subreddit1" -l "1466812800" -up "1498348800"

Now, I need to run this tool a bunch of times using a for loop, passing over different argument values each time. The tool also prints out some output into command line when you run it - and I would like to intercept and print it out from my python script as well. Finally, I need to ensure that before I move on in my loop and run the tool another time that current execution of the timesearch tool is completed.

One side note here - I do need to ensure that the timesearch is executed using same environment which I use to run my main script with for loop.

I am trying to understand what is the best way to do it.

If I just go for this it doesn't work:

import os
#for loop will go here
os.system('python timesearch.py timesearch -r "ethereum" -l "1466812800" -up "1498348800"')

It fails due to several reasons - it doesn't use the environment in which I am writing my script with a loop, it also doesn't capture the print output of timesearch.

Any advice on how to achieve it?

Just to highlight - I can't just go and pull function I need in timesearch, since it calls the __init__ to set up some things based on the arguments you pass.

9000 · Accepted Answer · 2018-02-14 23:50:08Z

1

I wouldn't call python script with os.system. There is basically one function which you need to use: main(sys.argv[1:])

https://github.com/voussoir/timesearch/blob/master/timesearch/__init__.py#L435.

edited Feb 14, 2018 at 23:50

9000

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answered Feb 14, 2018 at 23:48

Meehow

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2 Comments

Maksim Khaitovich Over a year ago

Can we be sure that the init part won't be messed up? I mean will init be called each time I call timesearch.main?

Meehow Over a year ago

What do you mean by init part? Is it the part outside the function body? I believe you don't need to create new ArgumentParser every time you call main function.

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