While Loop | Break statement | Continue Statement | Popping up elements from list 

Loops in python,
Types of loops in python,
for loop in python,
while loop in python,
counter variables, Iteration in python,
syntax of for loop in python,
use of strings in for loop in python,
use of lists in for loop in python,
enumeration in python, Ranges in for loop, Index in for loop,
Nested for loop, continue statement in python, break statement in python,
pass statement in python, adding elements to a list, popping an element from the list, finding the sum of the list elements,
break in while loop, continue in while loop