Python - Swap 2 numbers Without using 3rd variable

Here I am going to explain how we can swap 2 numbers without using 3^rd variable.

Step 1: Open IDLE(Python GUI) in your system.

Step 2 : Type the Below code and save the code Eg:- I have saved with swap name.

a = 8
b = 7

print("the value for 1st variable is",a)
print("the value for 2nd variable is",b)

a = a+b
b = a-b
a = a-b

print("the value after swaping 1st variable is",a)
print("the value after swaping 2nd variable is",b)
  
Step 3 : Open command prompt.

Step 4 : Go to the saved script folder.

Step 5 : Write python <Script name>.py  for execution.(Eg.- python swap.py)

Image 1.