Variables in Python

First, Name:

Variable naming rules in Python are: only letters, numbers, underscores _, and cannot start with a number

Ii. Declaration, assignment

1, Python is a dynamic language, do not need to declare the type of variables in advance, you can assign arbitrary data types to variables, and the same variable can be repeatedly assigned to different data types of values.

2. You can copy variables to variables

eg

A=1

B=a

A= ' 123 '

Print B

At this point the printed result B is 1, because B points to a point of 1, when the direction of a changes, and B does not have any relationship.

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

Variables in Python