How to make keyword for python script "python filename.py"

If you're using Linux, MacOS, or some other Unix-based environment, rename the file to my_keyword and use a shebang line to make it use the Python interpreter, and make the file executable. Then make sure the file is in a directory that's in your shell PATH.

mv filename.py my_keyword
chmod +x my_keyword

Make sure the first line of the file is:

#!/usr/bin/env python

This tells the shell to run Python and to interpret the contents of the file.

You may want to install the file in /usr/local/bin, or add ~/bin to your PATH, so that you can execute the file without entering the full path.

If you are on UNIX OS, you can make an alias for your filename.py with the keyword my_keyword and then you can easily execute from the terminal like below,

$ alias my_keyword="python ./filename.py"
$ my_keyword

For Windows : https://medium.com/@shivamethical/create-command-line-alias-in-windows-76684635b4c4

For macOS X Catalina, you can do so via alias:

1. Open Terminal
2. Type ls -la to check whether you have .zshrc
3. If yes, and assuming the file is at a folder in your Desktop, you can simply type the following, do note that you need to swap your_username and your_folder accordingly.

echo "alias key="python /Users/your_username/Desktop/your_folder/filename.py"" >> ~/.zshrc

4. source ~/.zshrc

For macOS X before Catalina, replace .zshrc with .bash_profile from the instruction above.