how to add in python

a = int(input("Enter first number:"))
b = int(input("Enter second number:"))
sum = a+b
print(sum)

# This program adds two numbers

num1 = 1.5
num2 = 6.3

# Add two numbers
sum = float(num1) + float(num2)

# Display the sum
print('The sum of {0} and {1} is {2}'.format(num1, num2, sum))

a = int(input())
b = int(input())
s = a+b
print(S)

a = 6
b = 12
c = a + b
#That is how you can add two numbers or variables