Python object and memory management, python Memory Management

Python object and memory management, python Memory Management
Object Type

Standard Type
Integer, Boolean, Long integer, Floating point real number, Complex number, String, List, Tuple, Dictionary

Other built-in types
Type, Null object (None), file, set/Fixed Set, function/method, module, Class

Internal type
Generally, programmers do not have much contact with each other.

Three features of the Python object are & is not

The is and is not operators test whether two variables point to the same object.
A is B is equivalent to id (a) = id (B)

An integer or string object is an unchangeable object. when an object is created, it may not be created, and python caches a simple integer.

Standard built-in functions

Cmp (obj1, obj2)
Repr (obj) or'Obj'
Str (obj)
Type (obj)

Object Declaration

No explicit declaration is required. It is automatically declared when the value is assigned for the first time.
The object type and memory usage are determined at runtime.

Python Garbage Collector

UseReference CounterTo track objects in the memory.

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