How do I pass a class field to a decorator on a class method as an argument? What I want to do is something like: class Client(object): def __init__(self, url): self.url = url @check_authorization(“some_attr”, self.url) def get(self): do_work() It complains that self does not exist for passing self.url to the decorator. Is there a way … Read more
What does the @ symbol do in Python? 14 s 14 An @ symbol at the beginning of a line is used for class and function decorators: PEP 318: Decorators Python Decorators The most common Python decorators are: @property @classmethod @staticmethod An @ in the middle of a line is probably matrix multiplication: @ as … Read more
I would like to understand how the built-in function property works. What confuses me is that property can also be used as a decorator, but it only takes arguments when used as a built-in function and not when used as a decorator. This example is from the documentation: class C: def __init__(self): self._x = None … Read more
I would like to understand how the built-in function property works. What confuses me is that property can also be used as a decorator, but it only takes arguments when used as a built-in function and not when used as a decorator. This example is from the documentation: class C: def __init__(self): self._x = None … Read more
How can I make two decorators in Python that would do the following? @makebold @makeitalic def say(): return “Hello” …which should return: “<b><i>Hello</i></b>” 1 18
What is the difference between a function decorated with @staticmethod and one decorated with @classmethod? 3 33 Maybe a bit of example code will help: Notice the difference in the call signatures of foo, class_foo and static_foo: class A(object): def foo(self, x): print(f”executing foo({self}, {x})”) @classmethod def class_foo(cls, x): print(f”executing class_foo({cls}, {x})”) @staticmethod def static_foo(x): … Read more
