What is the difference between @classmethod and @staticmethod in Python, and when should each be used?

Answer:
@classmethod receives the class (cls) as its first argument and is used to define methods that operate on the class itself rather than instances. It can modify class state or create alternative constructors. @staticmethod, on the other hand, does not receive any implicit first argument (neither self nor cls) and behaves like a regular function bound to the class namespace. It cannot access or modify class or instance state.

For example:

class MyClass:
    count = 0

    def __init__(self):
        MyClass.count += 1

    @classmethod
    def get_count(cls):
        return cls.count

    @staticmethod
    def helper_method(x):
        return x * 2

print(MyClass.get_count())  # 0 initially
obj = MyClass()
print(MyClass.get_count())  # 1
print(MyClass.helper_method(5))  # 10

Use `@classmethod for factory methods or operations affecting the class, and @staticmethod` for utility functions logically related to the class but independent of its state.

#Python #AdvancedPython #OOP #ClassMethods #StaticMethods #PythonInternals

By: @DataScienceQ 🚀