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Python Common tips & deep copy shallow Copy & Collection

Source: Internet
Author: User
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1 Swap variables

By not referencing third-party variables

A = 1= 2= a+b   #3b = A a   #1a = A-B    #2

How to Exchange in Python

A = 1= 2= a   , b# swaps the values of 2 variables, and the Python bottom helps you introduce a third-party variable in the swap print(A, b)    #2  1
2 defining multiple variables at the same time 
A=b=c=0   ##同时定义多个变量, defines 3 variables with a value of 0

Python Common tips & deep copy shallow Copy & Collection

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