登陆接口

count=0
while count < 3:
    user=input(‘please input username >>‘)
    password=input(‘please input passwd >>‘)
    if user == ‘yangguang‘ and password == ‘sunshine‘:
        print (‘welcome‘)
        break
    else:
        print (‘error user or passwd‘)
        count+=1
    continue

登陆接口

原文：http://www.cnblogs.com/sunnybible/p/7492414.html