How Can I Get the Path and Filename of the Currently Running Python Script?

Retrieving the Path and Name of the Currently Running Python Script

In Python programming, you may encounter the need to obtain the path and name of the currently executing script, especially when dealing with modularized or interdependent scripts. This information can be useful for debugging, logging, or coordinating script execution.

Within the context of a multi-file script execution flow, where one script (e.g., script_1.py) calls another (e.g., script_2.py), which in turn calls a third (e.g., script_3.py), determining the path and filename of the innermost script (script_3.py) can be challenging.

While methods like os.getcwd() provide the starting script's filepath, they fail to capture the location of the currently running script. To address this issue, the file attribute comes to our aid.

The file attribute is a built-in attribute available to any Python script that stores the path and name of the script currently being executed. Utilizing this attribute within script_3.py, you can easily extract both the filepath and filename:

import os

print(os.path.realpath(__file__))  # Returns the absolute path and filename

For more advanced scenarios, you may want to consider using os.path.realpath to eliminate potential symlinks, ensuring you get the actual physical path:

import os

print(os.path.realpath(__file__))  # Returns the absolute path and filename

By utilizing the file attribute, you eliminate the need for explicitly passing the path and filename as arguments or relying on os.getcwd()'s limited scope, providing a straightforward method for obtaining this crucial information from within the script itself.

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