[英]Calling on a method from another class in python
我试图用下面的代码做的是创建一个单独的Privilege类,它有一个名为show_Privileges的方法。 该方法打印用户权限。
class User:
"""Describes users of a system"""
def __init__(self, first_name, last_name):
"""Initialize first name and last name"""
self.first_name = first_name
self.last_name = last_name
self.login_attempts = 0
def describe_user(self):
"""Describing the user"""
print("User " + self.first_name.title() + " " + self.last_name.title() + ".")
def greet_user(self):
"""Greeting"""
print("Hello " + self.first_name.title() + " " + self.last_name.title() + "!")
def increment_login_attempts(self):
"""Increments the number of login attempts by 1"""
self.login_attempts += 1
print("User has logged in " + str(self.login_attempts) + " times.")
def reset_login_attempts(self):
self.login_attempts = 0
print("User has logged in " + str(self.login_attempts) + " times.")
class Privileges:
"""Making a privileges class"""
def __init(self, privileges):
"""Defining the privilege attribute"""
self.privileges = privileges
def show_privileges(self):
"""Defining privileges"""
rights = ['can add post', 'can delete post', 'can ban user']
print("The user has the following rights: \n")
for right in rights:
print(right.title())
class Admin(User):
"""Describes admin rights"""
def __init__(self, first_name, last_name, privileges):
"""Initialize first and last name"""
super().__init__(first_name, last_name, privileges)
self.privileges = Privileges()
super_Admin = Admin('Ed', 'Ward', 'root')
print(super_Admin.describe_user())
super_Admin.privileges.show_privileges()
尝试运行时,我收到以下错误。 有任何想法吗?
Traceback(最近一次调用最后一次):
File "users.py", line 50, in <module>
super_Admin = Admin('Ed', 'Ward', 'root')
File "users.py", line 44, in __init__
super().__init__(first_name, last_name, privileges)
TypeError: init ()需要3个位置参数,但是给出了4个
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