Python Passport

Examples

Python Command-Line Args

Parsing Command-Line Arguments

Python command-line args use argparse for flexible CLI parsing.

Introduction to Python Command-Line Arguments

Command-line arguments are a way to provide inputs to a Python script from the command line. Python's argparse module offers a flexible way to process these arguments, allowing developers to create robust command-line interfaces (CLI) for their applications.

In this tutorial, we'll explore how to use argparse to handle command-line arguments effectively.

Setting Up argparse

To begin using argparse, you need to import the module and create an ArgumentParser object. This object will hold all the information necessary to parse the command line arguments.

Adding Arguments

Once you have an ArgumentParser object, you can start adding arguments. Each argument can have various attributes such as type, help message, and default value. Let's add a couple of arguments to our parser.

Parsing Arguments

After defining the arguments, use the parse_args() method to parse the command-line arguments. This method returns an object containing the parsed arguments, which you can access as attributes.

Running the Script

To see the argparse module in action, save your script and run it from the command line. For example:

python script.py --name Alice --age 28

This will output:

Hello, Alice! You are 28 years old.

Examples

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Logging Setup