Python: Add two objects if both objects are an integer type

Last update on February 21 2025 07:47:59 (UTC/GMT +8 hours)

Add Integers Validator

Write a Python program to add two objects if both objects are integers.

Sample Solution:

Python Code:

# Define a function 'add_numbers' that takes two arguments: a and b.
def add_numbers(a, b):
    # Check if both 'a' and 'b' are integers using the 'isinstance' function.
    if not (isinstance(a, int) and isinstance(b, int)):
        # If either 'a' or 'b' is not an integer, return an error message.
        return "Inputs must be integers!"
    # If both 'a' and 'b' are integers, return their sum.
    return a + b

# Test the 'add_numbers' function with various input values and print the results.
print(add_numbers(10, 20))     # Valid: Both inputs are integers, and it returns the sum.
print(add_numbers(10, 20.23))  # Invalid: One of the inputs is a float, so it returns an error message.
print(add_numbers('5', 6))     # Invalid: One of the inputs is a string, so it returns an error message.
print(add_numbers('5', '6'))   # Invalid: Both inputs are strings, so it returns an error message.

Sample Output:

30
Inputs must be integers!
Inputs must be integers!
Inputs must be integers!

Explanation:

The said code defines a function called "add_numbers(a, b)" that takes two integers "a" and "b" as arguments. The function first checks if "a" and "b" are both instances of the "int" data type using the "isinstance" function. If either "a" or "b" is not an integer, the function returns the string "Inputs must be integers!"

Finally the code calls the function four times with different arguments, passing i) two integers, ii) an integer and a float, iii) a string and an integer and iv) two strings.

It will return the sum of the integers passed in the first call. For the second, third and fourth calls will return the string "Inputs must be integers!" as the inputs passed are not integers.

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python function that adds two numbers if both are integers; otherwise, return "Invalid input".
• Write a script that takes two values and returns their sum if both are either integers or floats.
• Write a program that takes two values and returns the sum if both are numbers, otherwise returns their concatenation as a string.
• Write a Python program that adds two values, but if either is a string, convert both to strings and concatenate them.

Python Code Editor:

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