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1 问题

图

1

 问题

9

−

5

图1~ 问题9-5






图


1




问题


9




−








5

2 代码及其输出

# 9-5
class User:
    def __init__(self, first_name, last_name, login_attempts):
        self.first_name = first_name
        self.last_name = last_name
        self.login_attempts = login_attempts

    def describe_user(self):
        print("user name is " + self.first_name + self.last_name)

    def greet_user(self):
        print("hello! " + self.first_name + self.last_name)

    def increment_login_attempts(self):
        self.login_attempts += 1

    def reset_login_attempts(self):
        self.login_attempts = 0

# Answer question 9-5！

# create two objects
u_1 = User("k", "t4ngw", 0)


# Calling 5 times!
for i in range(5):
    u_1.increment_login_attempts()
print(u_1.login_attempts) # login_attempts = 5

# reset login_attempts!
u_1.reset_login_attempts()
print(u_1.login_attempts) # login_attempts = 0

# output
5
0