python命令行参数sys.argv使用示例

代码如下:

#diff.py#!/bin/env python

import sys if len(sys.argv) 3: print “usage: ” + sys.argv[0] + “file1 file2” sys.exit(-1)

file1 = sys.argv[1]file2 = sys.argv[2]

list1 = {}for line in open(file1): list1[line.split()[0]] = 1

for line in open(file2): key = line.split()[0] if key not in list1: sys.stdout.write(line)