Create a script to execute another python file

Question

I am creating a new Python package. It is a testing framework. The package will offer a console script and the console script shall be used to invoke the application.

Since this is a testing application the primary argument to the command will be Python file(testing logic). Assume the console script's name is test_auto

The test application is invoked as

$ test_auto ./main.py

Which does some initialization and then executes the python file exactly like python ./main.py would do. The main.py is end-user's script.

The problem is executing the supplied python file.

Solution I tried; is importing the python file(user-script) using importlib. This works and executes the user-script, but isn't exactly same as invoking from Python. For eg; if there is if __name__ == '__main__': block in the user-script, it wouldn't be executed as we are 'import'ing the user-script for executing it.

Is there any way to achieve executing the python file as if it is directly invoked.