passing parameters to python script
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title: a guide to passing parameters to python scripts
introduction:
passing parameters to python scripts is a fundamental skill for any developer. it allows scripts to be more versatile and adaptable to different scenarios. in this tutorial, we will explore various methods of passing parameters to python scripts, ranging from command-line arguments to more advanced techniques.
1. command-line arguments:
one of the simplest ways to pass parameters to a python script is through command-line arguments. the sys module provides access to these arguments via the argv list. here's an example:
run the script with command-line arguments:
2. argparse module:
the argparse module provides a more sophisticated way to handle command-line arguments. it allows you to define arguments, their types, and help messages. here's an example:
run the script with argparse:
3. environment variables:
you can also pass parameters to a python script using environment variables. the os module provides access to these variables. here's an example:
set environment variables before running the script:
conclusion:
in this tutorial, we covered various methods of passing parameters to python scripts, including command-line arguments, the argparse module, and environment variables. choosing the appropriate method depends on the complexity and requirements of your script. experiment with these techniques to enhance the flexibility of your python scripts.
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