Скачать или смотреть python staticmethod and classmethod

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in python, staticmethod and classmethod are two types of methods that are used to define methods within a class but serve different purposes. here's a detailed explanation of each:
definition and purpose: a staticmethod is a method that belongs to a class rather than an instance of the class. it does not require access to the instance (self) or the class (cls). this means that it cannot modify object state or class state. it is used when you need a method that logically belongs to the class but does not need to interact with class or instance data.
usage: static methods are often used for utility functions that perform operations related to the class but do not need to access or modify class attributes or instance attributes. they are essentially the same as regular functions but belong to the namespace of the class.
how to define: you define a static method using the @staticmethod decorator. it is then called on the class itself rather than on an instance of the class.
definition and purpose: a classmethod is a method that receives the class as its first argument rather than an instance. this means it can modify class state that applies across all instances of the class, but it cannot modify the instance state.
usage: class methods are used for factory methods, which instantiate objects in a specific way, or when you need to modify class-level data or access class-level attributes. they provide a way to work with class data without needing to create an instance of the class.
how to define: you define a class method using the @classmethod decorator. the first parameter of a class method is conventionally named cls, which refers to the class itself, allowing access to class attributes and methods.
first parameter:
access to class and instance data:
typical use cases:
by understanding and using staticmethod and classmethod appropriately, you can write cleaner, more organized code and make better use of object-oriented principles in python.
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