https://blog.csdn.net/daiyu__zz/article/details/81912018
There are two ways to create a new thread through the threading module in python3.x: one is through threading.Thread (Target = executable Method) -that is, an executable method (or object) is passed to the Thread object; the second is inheriting threading .Thread defines subclasses and overrides the run () method. In the second method, the only method that must be rewritten is run ()
(1) Create multiple threads through threading.Thread
(2) Create multiple threads by inheriting threading.Thread to define subclasses
Use the Threading module to create threads, inherit directly from threading.Thread, and then rewrite the init method and run method: