How to run python scripts like cli commands?

Question

I want to create my own command line utility tools, that we can run at the command line by simply typing the command name. git is a great example of the sort of commands I want to create.

I want to achieve this using python.

I have followed:

1. https://dev.to/pybash/how-to-create-a-command-line-utility-using-python-4ae6

I have tried this before from other sources, but cannot implement it.

For this one when I do:

C:\Users\username> search.py .py D:\Programming

I get nothing, nothing happens. Only the file search.py opens in VS code.
Note: I have tried adding #!/usr/bin/env python and #!/usr/bin/python to start of the file, it does not help.

#Expected output
D:\Programming\CLI-Utilities\search.py
D:\Programming\CLI-Utilities\calc.py
D:\Programming\etc.py
No. of files matched = 3

Code in search.py:

# search.py - CLI-Utilities - play4Tutorials.hashnode.dev, github.com/play4Tutorials
try:
    import os  # stdlib
    import sys  # stdlib
# Exception and Error Handling
except ImportError as e:
    print("Error: Some modules could not be imported from stdlib('sys' and 'os')")

keyword = sys.argv[1]  # Get the keyword that is to be searched for
path = " ".join(sys.argv[2:])  # Get the path where to search for the keyword

filesMatched = 0  # Initialize filesMatched as 0

# Function to search the keyword in a given directory
def search_files(keyword, path):
    filesFound = filesMatched
    for root, dirs, files in os.walk(
        path
    ):  # Use os.walk(path) to loop through the given directory and get the root, dirs, and files
        for file in files:  # Loop through all the files in the given directory.
            if keyword in file:  # Check if keyword is in filename
                filesFound += 1  # Counter to see how many files matched
                print(
                    " " + root + "\\" + str(file) + "\n"
                )  # Print out the full file path for every matching file
                if (
                    filesFound == 0
                ):  # Check if no files matched the given keyword and print the same
                    print(
                        "No matching files in the given directory! Try another directory!"
                    )
    # If 1 or more files are matched then print the same
    print(f"No. of files matched: {filesFound}")


try:
    search_files(keyword, path)  # Call the function
# Error and Exception Handling
except FileNotFoundError as e:
    print(
        "Error: FileNotFoundError occured! Make sure you entered the correct path and entered it correctly."
    )
except Exception as e:
    print(f"Error: Some Error occured! \nDetails: {e}")

Screenshot of my path variables, after following the "how to run it from anywhere" instructions