python day1

_username = "alex"
_password = "abc123"
username = input("username:")
password = input("password:")
if _username == username and _password == password:
    print("welcom user{name} login...".format(name = username))
else:
    print("invalid username or password!")

age_of_oldboy = 56

count = 0
while True:
    if count == 3:
        break
    guess_age = int(input("guess age:"))
    if guess_age == age_of_oldboy:
        print("you got it:")
        break;
    elif guess_age > age_of_oldboy:
        print("think smaller!")
    else:
        print("think bigger!")
    count +=1