NameError: name 'privileges'没有定义.你是说“特权”吗?

I don't know what went wrong.

The error is as follows:

Privileges:
- This user has no privileges.

Adding privileges...

Privileges:
Traceback (most recent call last):
  File "C:\Users\82791\Desktop\python_work\第9章\privileges.py", line 49, in <module>
    eric.privileges.show_privileges() 
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\82791\Desktop\python_work\第9章\privileges.py", line 33, in show_privileges
    for privilege in privileges:
                     ^^^^^^^^^^
NameError: name 'privileges' is not defined. Did you mean: 'privilege'?

The code is as follows:

class User:
    """一个表示用户的简单类。"""

    def __init__(self, first_name, last_name, username, email, location):
        """初始化用户。"""
        self.first_name = first_name.title()
        self.last_name = last_name.title()
        self.username = username
        self.email = email
        self.location = location.title()

class Admin(User):
    """有管理权限的用户。"""

    def __init__(self, first_name, last_name, username, email, location):
        """初始化管理员。"""
        super().__init__(first_name, last_name, username, email, location)

        # 将权限集初始化为空。
        self.privileges = Privileges()


class Privileges():
    """一个存储管理员权限的类。"""

    def __init__(self, privileges=[]):
        self.privileges = privileges

    def show_privileges(self):
        print("\nPrivileges:")
        if self.privileges:
            for privilege in privileges:
                print(f"- {privilege}")
        else:
            print("- This user has no privileges.")
    
eric = Admin('eric', 'matthes', 'e_matthes', 'e_matthes@example.com', 'alaska')

eric.privileges.show_privileges()

print("\nAdding privileges...")
eric_privileges = [
    'can reset passwords',
    'can moderate discussions',
    'can suspend accounts',
    ] 
eric.privileges.privileges = eric_privileges
eric.privileges.show_privileges()