Location of integer Object Storage in Python, and python integer Object Storage

Source: Internet
Author: User

Location of integer Object Storage in Python, and python integer Object Storage

Python integer objects are stored in different locations. Some of them are stored in a certain storage, while others are used to open up space.

For the reason of this sentence, you can look at the following code:


A = 5
B = 5
A is B # True

A = 500
B = 500
A is B # False


The code above shows that integer 5 always exists, while integer 500 never exists.

Which integers are stored all the time?


A, B, c = 0, 0, 0
While a is B:
I + = 1
A, B = int (str (I), int (str (I ))
Print (I) # print 257


As we know, non-negative integers smaller than or equal to 256 (2 ** 8) are always stored.


A =-1
B =-1
A is B # False

Negative numbers are not stored all the time.

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