how to execute command line arguments in python
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title: a guide to handling command line arguments in python
introduction:
command line arguments provide a convenient way to pass input parameters to a python script when it is executed. in this tutorial, we will explore how to handle command line arguments in python using the sys module and the argparse module. we'll cover basic usage and provide code examples to illustrate the concepts.
the sys module is part of the python standard library and provides access to some variables used or maintained by the interpreter. the sys.argv list holds command line arguments passed to the script. here's a simple example:
save this script as script.py and execute it from the command line:
the argparse module provides a more sophisticated way to parse command line arguments. it supports various argument types, default values, and automatically generates help messages. here's an example:
save this script as script.py and execute it from the command line:
this script demonstrates the use of positional arguments, optional arguments with default values, and boolean flags.
conclusion:
handling command line arguments in python is essential for creating versatile and user-friendly scripts. the sys.argv method is straightforward, while the argparse module offers more advanced features for parsing and validating arguments. choose the method that best suits your needs based on the complexity of your script.
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