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This article mainly explains "how to use the argparse library in python". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to use the argparse library in python".

1. When using complex parameters or multiple file names in the program, it is recommended to use the argparse library.

2. Deal with command line parameters in a systematic way, so as to write user-friendly command line programs. The Python standard library argparse is also used to parse command line arguments.

Example

Operating without parameters this script does not display anything to stdout. However, if you use the help or h option, the usage information of the script is prompted with information.

Usage: scripy_3.py [- h] optional arguments:-h,-- what is help show this help message and exitPython used to do? Python is mainly used in:

1. Web development

2. Data science research

3. Web crawler

4. Embedded application development

5. Game development

6. Desktop application development.

Thank you for your reading, the above is the content of "how to use the argparse library in python". After the study of this article, I believe you have a deeper understanding of how to use the argparse library in python, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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