Python @classmethod and @staticmethod differences

First of all, @staticmethod, this decorator is very well understood, is to let the method in the class into a static method, do not need to instantiate the object can be directly called. The "self" parameter cannot be used in this static method;

Look at @classmethod again. In fact, similar to the @staticmethod function, you can simply understand that the @staticmethod function adds a "CLS" parameter for this class of obj (in class inheritance, the CLS represents a subclass), and other objects in this class can be called by calling the CLS () object ( All are objects in Python.

If you do not understand the above two sentences, please look at the following code, you understand.

1 classTest (object):2Tag=13 4     defNormal_method (self):5         Print 'Normal Method'6 7 @classmethod8     defClass_method (CLS):9         Print 'class method, tag is%s'%CLS (). TagTen CLS (). Normal_method () One  A @staticmethod -     defStatic_method (): -         Print 'static method, tag is%s'%Test.tag the         #print ' Static method,tag is%s '% Test.class_method ()

Running Results >>>

>>> is 1>>> test.class_method ()class is 1normal Method

Python @classmethod and @staticmethod differences