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  1. Windows Python Scripts Execution from Anywhere
2 June 2023

Windows Python Scripts Execution from Anywhere

I have been using windows lately and from being a linux user most of my life been facing afew difficulties. Among them is the lack of having aliases. I won’t go deep into it but I had this difficulty where I had a python script that would find the file version of a DLL or binary file. I would like to run this script from anywhere so I thought it would be easy as pie but NOP its windows fellah’s it doesn’t work like that. If I was using linux an alias would fix this but below is the solution I proceeded to use and fixes for a peculiar error I faced.

  1. First placed the script on a certain directory where I plan to use to place all of my scripts in the future. i.e: C:\Users\%USER%\scripts\
  2. I proceeded to add that folder path to my current user environment variables. NB: Don’t forget the last \ slash after the folder name.
  3. Make sure .py files are opened with Python.exe. You can do that by going to any *.py file properties and change the Open With application.

That should be it. But wait remember the peculiar error/information, at first this never worked, my script expected an argument to process the input data and even placing a print function to print all arguments received, my script was only receiving the filename/script name which is usually argv[0]. Later on I learnt that one had to do a registry edit for registry key: HKEY_CLASSES_ROOT\Applications\python.exe\shell\open\command.

  • From: "C:\Users\%USER%\AppData\Local\Programs\Python\Python311\python.exe" "%1"
  • To: "C:\Users\%USER%\AppData\Local\Programs\Python\Python311\python.exe" "%1" "%*"

I had to add the "%*" to pass all arguments to python.exe as the above mentioned registry key controls the way python.exe shell. Source for solution.

This is messed up because I hate editing registry keys and worst of all registry keys under HKEY_CLASSES_ROOT.

Also in the python script, if you will be handling files and the path of the file is required use the below code to your liking:

import sys
import os

src = sys.argv[1].strip()         # strip leading/trailing whitespaces
file_path = os.path.abspath(src)  # get the absolute path of the file

if os.path.exists(file_path):
  # .....
  # process/workon file
  # .....
  print(f"[!] Error: {src} file path not found.")

Bye, have fun.