python下fileinput使用

https://www.cnblogs.com/jinjiangongzuoshi/p/5637793.html

http://cn-sec.com/archives/279988.html

#coding:utf-8
import fileinput



def openf():
	f1= fileinput.input(files=('fail_download.log'))
	#print 'ppppp:',f1.readline() 
	for i in f1:
		print fileinput.filename() ,fileinput.lineno(),i
	f1.close()
def start():
	openf()

def main():
	start()

if __name__ == '__main__':
	main()