How to Execute Python Scripts From the Command Line Without Navigating to Their Directory?

Executing Python Scripts via the Command Line: Delving into PYTHONPATH and PATH

To leverage Python scripts from the command line without navigating to their respective directories, it's crucial to understand the role of PYTHONPATH and PATH.

PYTHONPATH, as its name suggests, establishes the search path for importing Python modules. It assists in locating these modules during program execution. However, for directly executing scripts, PYTHONPATH isn't used.

Instead, consider PATH, which includes the directory pathnames where the command interpreter searches for executables. To use a Python script as a program, it's necessary to append the script's directory to PATH. This can be achieved using the command:

export PATH=$PATH:/home/randy/lib/python

Note: For successful script execution, you also need to add a shebang line (e.g., #!/usr/bin/env python) as the first line of your script. Additionally, grant execution privileges using the command:

chmod +x /home/randy/lib/python/gbmx.py

Once these steps are complete, you should be able to execute gbmx.py from any directory.

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