Comments:
=========
Program:
	two parts:
		Executable part	==> the output
		Non-Executable part	==> no output
			just for reading
			called as "comments"
		==> comments required for improving the readability of the program.

==> two ways for commenting:
	1) Single line commenting	==> #
	======================================

a = 10
b = 20
c = 30

# have taken three numbers with three names a,b and c

s = a+b+c
# have performed the sum on three numbers and stored in 's'

res = s/3
# have calculated the average of three numbers and stored in 'res'

print(s)
# printing the sum of three numbers
print(res)
# printing the average

	2) Multi line commenting	==> """ """
	============================================

# WAP TO FIND THE AREA OF THE SQUARE.

"""
Square: when all the four sides are equal
for the square:
area = side * side
"""
side = 12
# have taken an input for side of the square

area = side * side
# area of the square has calculated

print(area)
# printing the area of the square.
=========================================================
IO Operations:
==============
IO ==> Input and Output 

script for testing login:
=========================
Ticket Booking System Login:
	email:
	pwd:
		login
==> if your credentials are correct ==> Login Successful
==> if your credentials are incorrect ==> Login Fail

==> For IO operations:
	1) input() ==> Input Operation
	2) print() ==> Output Operation

Function:
	name
	represents block of action/operation
	()