Instance method is the most used method in python class. The instance method can be accessed by each instance. Each instance has its own instance variables. So, instance methods are used to access and modify instance variables.
Instance Method must have
self argument as the first argument of the instance method.
self just a name, it can be a different name.
self refers to the instance.
Class method works with class variables and access by class name. It also can access by instance, but we would like to access it by class name. All the class instances share the class variables and class method. So, class methods are used to access and modify class variables.
Class method must have
@classmethod before the class method. And class method must have
cls as the first argument.
cls just a name, it can be a different name,
cls refers to the class.
Static method is not related to class variables or instance variables. It contains some fixed information and can not be modified.
Static method must have
@staticmethod before the static method. And static method don’t have to use
cls as first argument. It doesn’t have any mandatory argument.