Python Magical function

Install any one Python Third party package , You will find that there are many packages and modules 、 Very complicated , And there are many classes and functions in many modules , How to know their usage in the process of actual use ？

dir function

• Find any class , Use dir(className) You can get all the members in the class .

help function

• Just find a function , Whether it is a member function of a class or an ordinary global function , Use help(funcName) You can get the official documentation of the function .