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Is it possible to pass variables to Python when invoking a script from a bash shell?

For example, when I would call my_script in the shell like this:

python my_script.py -par1 -par2

is it possible to use par1 and par2 as variables in Python so I can pass them as arguments to a function?

Something similar like for shell scripting, where in something like this:

my_script.sh par1

par1 would be stored as $1

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2 Answers 2

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You can get the commandline arguments from sys.argv

Python also comes with a variety of commandline processing utilities. I would recommend argparse which is included in the standard library starting with version 2.7. But there is also optparse or even getopt for the adventurous.

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Shell:

python my_script.py -par1 -par2

Python: Passing them as arguments to a function:

import sys

arg1,arg2 = sys.argv[1:3]

myfunc(arg1,arg2)
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1 Comment

Just to add that sys.argv[0] is the filename and sys.argv[1] is the first argument and so on.

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