Python: What are descriptor methods in detail?

1import logging
2
3class LoggedAttribute:
4    def __set_name__(self, owner, name):
5        self.name = name
6        self.private_name = f"_{name}"
7
8    def __get__(self, obj, objtype=None):
9        if obj is None:
10            return self
11        value = getattr(obj, self.private_name, None)
12        logging.debug(f"Getting {self.name} = {value}")
13        return value
14
15    def __set__(self, obj, value):
16        logging.debug(f"Setting {self.name} = {value}")
17        setattr(obj, self.private_name, value)
18
19    def __delete__(self, obj):
20        logging.debug(f"Deleting {self.name}")
21        if hasattr(obj, self.private_name):
22            delattr(obj, self.private_name)
23
24class User:
25    name = LoggedAttribute()
26    email = LoggedAttribute()
27
28    def __init__(self, name, email):
29        self.name = name
30        self.email = email
31
32u = User("Alice", "alice@example.com")
33print(u.name)  # Logs: Getting name = Alice
34u.name = "Bob" # Logs: Setting name = Bob