how to get a variable of a python file from bash script

Question

I have a python file, conf.py which is used to store configuration variables. conf.py is given below:

import os

step_number=100

I have a bash script runner.sh which tries to reach the variables from conf.py:

#! /bin/bash

#get step_number from conf file
step_number_=$(python ./conf.py step_number)

However, if I try to print the step_number_ with echo $step_number_, it returns empty value. Can you please help me to fix it?

Barmar · Accepted Answer · 2020-12-29 03:41:30Z

1

$(command) is replaced with the standard output of the command. So the Python script needs to print the variable so you can substitute it this way.

import os

step_number = 100
print(step_number)

answered Dec 29, 2020 at 3:41

Barmar

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