Detailed explanation of how to use the python OptionParser module

OptionParser is a module used to process the command line in python. It is a necessary tool in our process development using python

Optparse. It is powerful and easy to use. It can Conveniently generate standard command line instructions that comply with Unix/Posix specifications

Example code

from optparse import OptionParser
parse = OptionParser()

parse.add_option("-l", "--language", action= "store_true",
                dest= "lan",
                default= True,
                help= "write language for Program")

(option, arges) = parse.parse_args()if option.lan == True:    print 'lan is True'

As shown above, first import the OptionParser class and create the OptionParser object

Use add_option () to define command line parameters, and finally use parse_args() to parse the command line

add_option parameter parsing, action includes store (default), store_false, store_false, store_const, append, count, callback

Another function of OptParser is to automatically generate help information for the program, which will be explained later. The above is a preliminary learning

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