作业1：用python编写用户名密码输入接口程序

count = 0
while count <3:
    username = input("username:")
    password = input("password:")
    ''''''输入用户密码
    if username == "pang" and password == "pang123":
        print("welcome")
        break
        ''''''
        输入pang和pang123才有欢迎的打印输出并结束循环
    else:
        print("try again")
        ''''''''否则打印再试一次
    count +=1
    ''''''''循环一次+1

else:
    print("you have tried too many times,you are locked")

'''''''循环超过三次则打印你尝试的次数过多，已被锁定的


code:

count = 0
while count <3:
    username = input("username:")
    password = input("password:")
    if username == "pang" and password == "pang123":
        print("welcome")
        break
    else:
        print("try again")
    count += 1
else:
    print("you have tried too many times,you are locked")