Decorator is an advanced knowledge, less define their own decorator situation. But we will use a third-party package or inside the decorator,
01 function basis
001 Overview
(1) Scenario 1: used to manage and enhance the function of behavior
Before a function definition, which method can be spoken to the class defined by a static method, or methods @staticmethod called class methods, and thus different from the example method.
(2) Scenario 2
Scene: such as adding a number of features for tracking or logging function, or debugging time verify the validity of the test. Including automatic lock acquire or release some threads
(3) with a decorator advantage
Former (4) learning decorator preparations
Function assigned to the variable: function name may pay a variable as a parameter - a reference address, a variable name is the name of the function
Function as an argument: the function name can be passed as a parameter to another function
Multiple functions entrusted to function as a unified action
