How to call a shell script function/variable from python?

Question

Is there any way to call a shell script and use the functions/variable defined in the script from python?

The script is unix_shell.sh

#!/bin/bash
fun         


        

Answer 1

This can be done with subprocess. (At least this was what I was trying to do when I searched for this)

Like so:

output = subprocess.check_output(['bash', '-c', 'source utility_functions.sh; get_new_value 5'])

where utility_functions.sh looks like this:

#!/bin/bash
function get_new_value
{
    let "new_value=$1 * $1"
    echo $new_value
}

Here's how it looks in action...

>>> import subprocess
>>> output = subprocess.check_output(['bash', '-c', 'source utility_functions.sh; get_new_value 5'])
>>> print(output)
b'25\n'