1、input();
This method does not need to include modules, so this is also the most commonly used method of suspending.
The raw_input() and input() statements in Python2 have been merged into input() in Python3.
2、os.system("pause");
This method needs to include the os module (import os), and the cmd command line will pop up when IDLE runs under windows.
To perform a pause operation, directly running the .py file will directly pause on the command line.
3、time.sleep("second");
This method needs to include the time module (import time), second is a custom time length, according to the actual situation,
It may fluctuate up and down.