How to Execute an External Python Script from Within Another?

Invoking External Scripts from Running Scripts

In this scenario, we have a standalone Python script, test1.py, and a script called service.py that operates as a service. Our objective is to execute test1.py from within service.py.

To execute an external script, a common approach is as follows:

test1.py

def some_func():
    print('in test 1, unproductive')

if __name__ == '__main__':
    # test1.py executed as script
    # do something
    some_func()

This script defines a function, some_func(), and when executed directly (as a script), it calls that function.

service.py

import test1

def service_func():
    print('service func')

if __name__ == '__main__':
    # service.py executed as script
    # do something
    service_func()
    test1.some_func()

service.py imports test1 and defines its own function, service_func(). In the if name == '__main__' block, it calls both service_func() and test1.some_func(). By importing test1 and directly calling test1.some_func(), service.py can execute the functionality defined in test1.py.

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