How to Create a Simple Calculator App Using Python – Beginner Tutorial with Code

Are you just starting out with Python and want to build something cool? In this tutorial, we’ll show you how to create a **simple calculator app using Python** that can perform addition, subtraction, multiplication, and division.

This Python calculator is perfect for beginners learning basic functions and input/output operations.

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🔧 What You’ll Learn:

- Taking user input in Python

- Using if-else statements

- Building simple functions for each operation

- Creating a loop to keep the calculator running

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🧠 Python Calculator App Code

Here’s the full code:

```python

def add(x, y):

return x + y

def subtract(x, y):

return x - y

def multiply(x, y):

return x * y

def divide(x, y):

if y == 0:

return "Error! Division by zero."

return x / y

while True:

print("\nSelect Operation:")

print("1. Add")

print("2. Subtract")

print("3. Multiply")

print("4. Divide")

print("5. Exit")

choice = input("Enter choice (1-5): ")

if choice == '5':

print("Exiting calculator. Goodbye!")

break

num1 = float(input("Enter first number: "))

num2 = float(input("Enter second number: "))

if choice == '1':

print("Result:", add(num1, num2))

elif choice == '2':

print("Result:", subtract(num1, num2))

elif choice == '3':

print("Result:", multiply(num1, num2))

elif choice == '4':

print("Result:", divide(num1, num2))

else:

print("Invalid input. Please choose between 1-5.")

🖥️ Output Example:

Select Operation:

1. Add

2. Subtract

3. Multiply

4. Divide

5. Exit

Enter choice (1-5): 1

Enter first number: 10

Enter second number: 5

Result: 15.0

📌 Tips to Improve the Calculator:

Add GUI using Tkinter
Add square root, exponent, or modulus
Add error handling for invalid input types

🔗 Related Python Projects:

🧾 Final Thoughts

This simple calculator app is a great Python beginner project. It teaches basic functions, user input, loops, and conditional statements. If you're learning Python, projects like this are a fun and practical way to build your skills.

Tags: Python, Python Projects, Beginner Python, Python Calculator, Python Tutorial

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