Python's simplest use of argv, pythonargv

Python's simplest use of argv, pythonargv

If you want to use python to process files and find argv usage, you can find it.

If you want to pass parameters in python, you need to support the command line parameters. This saves you every time you make changes.

Usage: python xx. py xxx

Example:

1 #-*-coding: UTF-8-*-2 3 from sys import argv4 5 script, first = argv6 print "the script is called:", script7 print "the first variable is: ", first

The result is as follows:

 

Here argv receives a list variable.

1 #-*-coding: UTF-8-*-2 3 from sys import argv4 5 f = open (argv [1], 'R') 6 print f. read () 7 f. close ()

For example, if I read the file name and start to write it as open (argv, 'R'), a type error will be prompted, just change it to argv [1 ].