pass variable to python script from command line
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title: passing variables to python script from command line - a comprehensive tutorial
one powerful feature of python is the ability to accept input parameters from the command line, enabling users to customize script behavior without modifying the code. this tutorial will guide you through the process of passing variables to a python script using command-line arguments.
let's start by creating a simple python script that will receive variables from the command line.
this script retrieves command-line arguments using sys.argv and prints them. save this script as script.py.
open a terminal and navigate to the directory where your script.py is located. now, let's run the script with some command-line arguments.
replace arg1, arg2, and arg3 with the values you want to pass. execute the command and observe the output.
while the above example works, a more robust way to parse command-line arguments is to use the argparse module. modify your script as follows:
this modification provides a more structured way to handle command-line arguments.
run the updated script using the following command:
this will produce the same output as before, but with improved argument parsing.
congratulations! you've learned how to pass variables to a python script from the command line. this technique is essential for creating flexible and customizable python programs. feel free to integrate this knowledge into your future projects.
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