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This article mainly explains "how to use the getopt module in python". The explanation in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian to study and learn "how to use the getopt module in python" together.

1. Getopt module is a module that specializes in processing command line parameters and is used to obtain command line options and parameters. Command-line options make program parameters more flexible, supporting short option mode (-) and long option mode (-).

The module provides two methods and an exception handler to parse command-line arguments.

examples

import sysimport getopt def main(argv): input_file = "" output_file = "" # "hi:o:": short format analysis string, h without colon, means no parameters; i and o with colon, means parameters # ["help", "input_file=", "output_file="]: long format analysis string list, no equal sign after help, indicating no parameters; input_file and output_file with colon after, indicating parameters after #Return values include `opts` and `args`, opts is a list of tuples, each tuple is of the form: (options, additional parameters), such as: ('-i','test.png'); # args is a list of arguments that do not contain '-' or '--' opts, args = getopt.getopt(argv[1:], "hi:o:", ["help", "input_file=", "output_file="]) for opt, arg in opts: if opt in ("-h", "--help"): print('script_2.py -i -o ') print('or: test_arg.py --input_file= --output_file=') sys.exit() elif opt in ("-i", "--input_file"): input_file = arg elif opt in ("-o", "--output_file"): output_file = arg print ('input file is:', input_file) print ('output file is:', output_file) #Print parameters without '-' or '--' for i in range(0, len(args)): print ('argument %s without '-' or '--' is: %s' % (i + 1, args[i])) if __name__ == "__main__": main(sys.argv) Thank you for reading, the above is the content of "how to use getopt module in python", after studying this article, I believe that everyone has a deeper understanding of how to use getopt module in python, and the specific use needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

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