Variable in python

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Now,Our Actual python is started from now.

 Identifiers:-The smallest identifying unit in the program is called Identifier.(Like words in English Language.
An identifier can be categorized on the basis of their usage. like variable, package,function,class and so on.

 Variable:-Variable is just like a container that can hold any data.
                 variable are nothing but reserved memory location that store values.
                  It means that when we create a variable you reserved some space in memory location.
Why Variable in program : Since program is make for processing the data.Here Processing means perform Some calculation. let us take an example If we have to find the simple Interest Of a given Data.Then, the process of finding Simple Interest  is called Data Processing.
Program-Set of Instruction.

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