python get argument from command line
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Certainly! In Python, you can retrieve arguments passed from the command line using the sys module or the more user-friendly argparse module. Here's a tutorial covering both methods:
The sys module provides access to some variables used or maintained by the Python interpreter. sys.argv is a list in Python that contains the command-line arguments passed to the script.
Accessing Command-Line Arguments:
Here's an example of a Python script that accesses command-line arguments using sys.argv:
Save this code in a Python file (e.g., argument_parser.py) and run it from the command line with arguments:
Output:
The argparse module makes it easier to write user-friendly command-line interfaces. It allows you to define what arguments are needed and provides a neat way to handle them.
Creating a Script with argparse:
Here's an example of how to use argparse to create a script that accepts command-line arguments:
Save this code in a Python file (e.g., argparse_example.py) and run it from the command line:
Output:
Both sys.argv and argparse are effective ways to handle command-line arguments in Python. sys.argv is simpler but requires more manual parsing, while argparse provides a structured and user-friendly way to define and parse arguments for your script. Choose the method that best suits your needs based on the complexity and requirements of your command-line interface.
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