Have you had experience using descriptors in Python for managing access to object attributes?

Yes, descriptors in Python are objects that manage access to attributes of other objects through methods __get__, __set__, and __delete__. They allow controlling reading, writing, and deleting attributes.

An example of using a descriptor for value validation:

class PositiveNumber:
    def __get__(self, instance, owner):
        return instance._value

    def __set__(self, instance, value):
        if value < 0:
            raise ValueError("Value must be positive")
        instance._value = value

class Account:
    balance = PositiveNumber()

acc = Account()
acc.balance = 100  # works
acc.balance = -50  # raises ValueError

Thus, descriptors are useful for encapsulating access logic and data validation.