Python Small integer Object pool

#小整数对象池
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Small integer object is resident memory and will not be deleted from the Recycle

Integers are used extensively in programs, and Python uses a small integer pool of objects to optimize speed, avoiding the frequent application and destruction of memory space for integers.
Python's definition of small integers [-5,257] These books are built in advance and are not garbage collected.
In a Python program, all the unique integers in this range use the same object
The same is true of a single letter.
However, when you define two identical strings, the reference count is 0, which triggers a garbage collection
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#举个栗子

b = 100c = 100print(id(c))print(id(b))

#这两个的id是相同的

Python Small integer Object pool