Variables are used for store data.
First we assign value for variable.
E.g. Number1 = 121
Here variable is Number1
Stored / assigned value is 121

Number2 = 223
Here variable is Number2
Stored / assigned value is 223



We can store Strings , Numbers in variables. Value of variable can be change. Therefore python is called Dynamic language.




We can use any variable and any value.

Numbers

Strings


Rules and Conventions for Variables
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Rules

1) Variable does't start with number
2) Variable does't start with symbols
3) Variable can start with underscore_

Conventions (For more words)

1) Snake case writing (Using under score)
    user_one_name


    


2) Camel case writing (Using capital latter)
    UserOneName