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)

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