Python Magic Method and invocation method

Magic Method	Invocation Mode	explain
__new__ (CLS [,...])	Instance = MyClass (Arg1, arg2)	__new__ is called when an instance is created
__init__ (self [,...])	Instance = MyClass (Arg1, arg2)	__init__ is called when an instance is created
__cmp__ (self, other)	Self = = others, self > Other, etc.	Called at the time of comparison
__pos__ (self)	+self	Unary plus operator
__neg__ (self)	-self	unary minus operator
__invert__ (self)	~self	Take the inverse operator
__index__ (self)	X[self]	When an object is used as an index
__nonzero__ (self)	BOOL (self)	The Boolean value of the object
__getattr__ (self, name)	Self.name # name does not exist	When accessing a property that does not exist
__setattr__ (self, name, Val)	Self.name = Val	When assigning a value to a property
__delattr__ (self, name)	Del Self.name	When you delete an attribute
__getattribute (self, name)	Self.name	When accessing any property
__getitem__ (self, key)	Self[key]	When you use an index to access elements
__setitem__ (self, key, Val)	Self[key] = val	When assigning a value to an index value
__delitem__ (self, key)	Del Self[key]	When you delete an index value
__iter__ (self)	For x in self	When iterating
__contains__ (self, value)	Value in the self, value is not in the self	When you test a relationship by using the in operation
__concat__ (self, value)	Self + Other	When connecting two objects
__call__ (self [,...])	Self (args)	When the "invoke" object
__enter__ (self)	With self as x:	With statement Environment management
__exit__ (self, exc, Val, trace)	With self as x:	With statement Environment management
__getstate__ (self)	Pickle.dump (Pkl_file, self)	Serialization of
__setstate__ (self)	data = Pickle.load (pkl_file)	Serialization of

Python Magic Method and invocation method