python中for循环是可以带else的

32ijhgf

python中for循环是可以带else的，不满足for循环的条件，可以执行ELSE的内容！ #!user/bin/env python #-*-coding:utf-8 -*- # Author: Sy106 #read userinfo account='user.txt' f=file(account) accountName=f.readlines() print 'the Auth Names are:',accountName for i in range(5):     Login=False     #read lock name into local file     username=raw_input('please input your login name:').strip()     lock='lock.txt'     f=file(lock)     lockName_list=[]     for lockName in f.readlines():         lockName=lockName.strip('\n')         lockName_list.append(lockName)     f.close()     print 'lockName_list are:',lockName_list     if username in lockName_list:         print'The user %s has been lock!please use another username!'%username         break     for line in accountName:         line=line.split()         if username==line[0]:#if the name is right ,input the passwd             for j in range(3):                 passwd = raw_input('please input your password:').strip()                 if passwd==line[1]:                     print "Welcome %s login the system!"%username#login success                     Login = True                     break             else:                 f=file(lock,'a')                 f.write('%s\n'%username)                 f.close()                 print 'Enter 3 times wrong password,the name %s is locked'%username             if Login is True:break#jump out of for loop     else:         print 'please input the right name ,retry!'     if  Login is True:         break#jump out of top for loop

woshipreson

while/if/for 都带else语句