How to swap two variables value in python?

For example, If you have a equal to 1 and b equal to 2 then get output a equal to 2 and b equal to 1.

First create c variable then set c equal to a, a equal to b and b equal to c.

Here is code,

a = 1
b = 2

print("OLD a = ",a)
print("OLD b = ",b)

c = a
a = b
b = c

print("a = ",a)
print("b = ",b)

Output:

OLD a = 1

OLD b = 2

a = 2

b = 1