The function and difference of the flowing python-@staticmethod and @classmethod

In general, to use a method of a class, you need to instantiate an object before calling the method.

Instead of using @staticmethod or @classmethod, you can call it without instantiating it, directly from the class name. Method Name ().

This facilitates organizing the code, putting some functions that should belong to a class into that class, while facilitating the cleanliness of the namespace.

Since both @staticmethod and @classmethod can be called directly from the class name. Method Name (), what's the difference between them?

In terms of their use,

• @staticmethod does not need to represent the self of its own object and the CLS parameters of its own class, just as with a function.
• @classmethod also does not require the self parameter, but the first parameter needs to be a CLS parameter that represents its own class.

If you want to invoke some of the property methods of this class in @staticmethod, you can only direct the class name. The name of the property or class. Method name.

and @classmethod, because it holds the CLS parameter, can invoke the class's properties, class methods, instantiate objects, and so on, avoiding hard coding.

The code below.

1 classA (object):2Bar = 13     deffoo (self):4         Print 'Foo'  5  6 @staticmethod7     defStatic_foo ():8         Print 'Static_foo'  9         PrintA.barTen   One @classmethod A     defClass_foo (CLS): -         Print 'Class_foo'   -         PrintCls.bar the cls (). Foo () -    - A.static_foo () -A.class_foo ()

Output
Static_foo
1
Class_foo
1
Foo

Transferred from: http://blog.csdn.net/handsomekang/article/details/9615239

The function and difference of the flowing python-@staticmethod and @classmethod