Python basics [Article 4] parameters, python Article 4 parameters

Python basics [Article 4] parameters, python Article 4 parameters

The program cannot avoid the need for some parameters to support the program. How can the program receive parameters? Here, the sys. argv [] Method of the sys module is used to obtain parameters.

1. Usage:

Import sys // detailed description of the imported sys module later

Sys. argv [tage] // obtain the value based on the subscript of the parameter.

(Note: The above tage is a subscript, where the program itself is 0, that is, sys. argv [0], and the parameters after the script are in turn)

 

2. Example:

// Script content

# Vim tmp. py

#! /Usr/bin/env pythonimport sysprint sys. argv [0] print sys. argv [1] print sys. argv [2]

 

// Execution result

# Python tmp. py string1 string2tmp. pystring1string2