To execute a Python script, simply invoke the Python interpreter followed by the script name, in this case, my_pythonscript.py. Or, if we are in a different working directory, then use its full address:
> python my_pythonscript.py
From now on, for every invocation of a Python script, we will use the preceding notation; that is, python, followed by script_name.py, assuming that the directory from which the Python interpreter is launched is the one where the script to be executed resides.