Python Programs

Share with a Friend

Swap two variables using a temporary variable - Python Program

To swap two variables in Python using a temporary variable, a third variable is introduced to temporarily store the value of one of the variables. This allows the values to be exchanged without losing any data.

Here is the process:

• Store the value of the first variable in the temporary variable.

This preserves the original value of the first variable before it is overwritten.

• Assign the value of the second variable to the first variable.

The first variable now holds the value that was originally in the second variable.

• Assign the value of the temporary variable to the second variable.

The second variable now receives the original value of the first variable, which was stored in the temporary variable. 

# Input values in two variables

a = int(input("Enter the first number: "))
b = int(input("Enter the second number: "))

print(f"Before swapping: a = {a}, b = {b}")

# Create a temporary variable and store the value of 'a'
temp = a

# Assign the value of 'b' to 'a'
a = b

# Assign the value of 'temp' (original 'a') to 'b'
b = temp

print(f"After swapping: a = {a}, b = {b}")

 
OUTPUT  :
Enter the first number: 10
Enter the second number: 20
Before swapping: a = 10, b = 20
After swapping: a = 20, b = 10