Python class private method

Class private method

__private_method starts with two underscores, declaring that the method is a private method and cannot be called outside the class.

Call slef.__private_methods inside the class.

Proprietary methods of class:

__init__ constructor, call

__del__ destructor when generating an object, use

__repr__ to print and convert

__setitem__ to assign according to index

__getitem__ to obtain according to index Value

__len__ gets length

__cmp__ comparison operation

__call__ function call

__add__ addition operation

__sub__ subtraction operation

__mul__ multiplication operation

__div__ division operation

__mod__ remainder operation

__pow__ weighing square