Challenge: Inspecting Class Hierarchies
When you want to understand how Python classes and metaclasses relate, you can use the __class__ attribute and the type() function. Every object in Python has a __class__ attribute that points to its class. For classes themselves, __class__ refers to the metaclass, which is usually type unless a custom metaclass is specified. The type() function, when called on an object, returns its class; when called on a class, it returns its metaclass. To explore the base classes of a class, you can use the __bases__ attribute, which is a tuple of the class's immediate parent classes. By combining these tools, you can inspect class hierarchies and metaclass relationships for both user-defined and built-in types.
Swipe to start coding
Write a function that takes a single argument obj.
- Print the class of
objin the format<class 'module.qualname'>. - Print the base classes of
obj's class, or "N/A" ifobjis an instance of a built-in type. - Print the metaclass of
obj's class.
Use the __class__ attribute to get the class of an object. Only print the base classes if the object's class is not a built-in type. The metaclass of a class can be accessed using the __class__ attribute of the class itself.
Рішення
Дякуємо за ваш відгук!
single
Запитати АІ
Запитати АІ
Запитайте про що завгодно або спробуйте одне із запропонованих запитань, щоб почати наш чат
Can you give an example showing how to use `__class__`, `type()`, and `__bases__`?
What is a metaclass, and when would I use a custom one?
How do these concepts apply to built-in types like `int` or `list`?
Чудово!
Completion показник покращився до 4.76Challenge: Inspecting Class Hierarchies
Свайпніть щоб показати меню
When you want to understand how Python classes and metaclasses relate, you can use the __class__ attribute and the type() function. Every object in Python has a __class__ attribute that points to its class. For classes themselves, __class__ refers to the metaclass, which is usually type unless a custom metaclass is specified. The type() function, when called on an object, returns its class; when called on a class, it returns its metaclass. To explore the base classes of a class, you can use the __bases__ attribute, which is a tuple of the class's immediate parent classes. By combining these tools, you can inspect class hierarchies and metaclass relationships for both user-defined and built-in types.
Swipe to start coding
Write a function that takes a single argument obj.
- Print the class of
objin the format<class 'module.qualname'>. - Print the base classes of
obj's class, or "N/A" ifobjis an instance of a built-in type. - Print the metaclass of
obj's class.
Use the __class__ attribute to get the class of an object. Only print the base classes if the object's class is not a built-in type. The metaclass of a class can be accessed using the __class__ attribute of the class itself.
Рішення
Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантівДякуємо за ваш відгук!
single
