pass arguments to python script from command line
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Title: A Guide to Passing Arguments to Python Scripts from the Command Line
Introduction:
When working with Python scripts, it's common to pass arguments from the command line to customize the script's behavior. This tutorial will walk you through the process of handling command-line arguments in a Python script, providing practical examples and explanations.
Step 1: Import the sys module
In Python, the sys module provides access to command-line arguments through the sys.argv list. To get started, import the sys module at the beginning of your script.
Step 2: Accessing Command-line Arguments
The command-line arguments are stored in the sys.argv list, where the first element (sys.argv[0]) is the script's name, and subsequent elements are the arguments passed to the script.
Save this as script.py and run it with some arguments:
Output:
Step 3: Parsing Command-line Arguments
For more structured argument handling, you can use the argparse module. This module simplifies the process of parsing command-line arguments and provides a convenient way to define and organize them.
Save this as script_with_args.py and run it with arguments:
Output:
Conclusion:
By following these steps, you can easily pass and handle command-line arguments in your Python scripts. The sys.argv method is suitable for simple cases, while the argparse module offers a more powerful and organized approach for handling complex arguments. Choose the method that best fits your script's requirements.
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