Packages In Python  How  To  use   Them 

package is a folder in python in which we have  modules .each file in that folder with .py extension can be a mudule.

  syntax  how to use  module  in python program:

             "form packagename  import modulename"  Here below detailed  video

        

                                               Variable Scope  in Python 

      Variables in python have scope means upto where they are visible where they are not visible it is explained by below video of mine

       

                                                    Recursion

When a function Calls itself it is recursive function. It forms a loop when it will do recursion. internally recursion is implemented using  Stack data structure by the compiler.

Command Line Arguments and argparse In python

         Command Line Arguments are passed at command prompt  while program is going for running 

in python no direct mechansim to pass command line arguments  we have argparse module in python to support command line arguments

                      

Command Line Argument Python Code execution