小白Day1账户密码
_username = "Alisa"
_password = "1234a"
count = 0
while count < 3:
username = input("username:")
password = input ("password:")
if username == _username and password == _password:
print("Welcome {name} to log in!".format(name=_username))
break
else:
if count == 2:
print("Locked Already")
break
print("Try again,daring!")
count = count + 1