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Scope of a variable
                  While creating a variable, you should also remember the limits of its usage. For example,

                  the boxes that your mother named, can be used in the kitchen and rarely outside of the
                  kitchen. Similarly, a variable can also be used in specific areas of a code, known as scope of
                  a variable.

                  The scope or accessibility of the variables defined in a program depends where you have
                  declared it in each program. Variable defined outside the scope cannot be accessed.


                  NAMING VARIABLES
                  Every variable in a program is unique and you need to allocate
                  variable a unique name. You cannot use the same name of a

                  variable more than once.

                  Variable name acts as an  identifier  for that variable and
                  suggest the information which it contains.

                                           Coding fact


                    In Covid-19  pandemic time, Avi Schiffmann,  a teenager,  coded one of the most visited
                    website across the globe ' ncov2019.live', to monitor COVID-19.





                    Example: If variable 'x' stores value 3, variable 'y' stores value 3. When         Subject Enrichment

                    we perform addition operation on 'x' and 'y', we will get the output as '6'.


                  Note: Variable is created, when you assign a value to it.

                  Rules for naming a variable in python:
                      Name your variables in such a way that it describes its purpose.
                     Variable name must begin with a letter or an underscore and can range from 1 to 255 characters.

                      No special character or spaces are allowed.
                      Uppercase and lowercase characters are distinct.
                      Keywords (reserved words) cannot be used as a variable.


                                           Coding fact

                    Co-founders of Apple, Steve Jobs and Steve Wozniak, in their teenage began their coding

                    careers.






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