Calculator Program - Python

Python

Learn Python Programming: A Beginner’s Guide to Coding, Automation, and Data Science

 

Introduction

Ever wanted to create your own calculator without relying on your phone? Now you can! Python makes it super easy to build a calculator that can handle basic arithmetic operations.

1. Basic Calculator using Python

Let's start with a simple calculator that can add, subtract, multiply, and divide numbers.

# Simple Python Calculator

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

print("Select operation:")
print("1. Add")
print("2. Subtract")
print("3. Multiply")
print("4. Divide")

choice = input("Enter choice (1/2/3/4): ")

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")

Boom! You now have a basic calculator in Python!

2. Making It More Fun

Let's add some personality to our calculator by making it respond in a fun way!

import random

def fun_response():
    responses = ["Wow, you're a math genius!", "Nice calculation!", "Math is fun, right?"]
    return random.choice(responses)

print("Welcome to the fun calculator!")
choice = input("Pick an operation (+, -, *, /): ")
num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))

if choice == '+':
    print("Result:", num1 + num2, fun_response())
elif choice == '-':
    print("Result:", num1 - num2, fun_response())
elif choice == '*':
    print("Result:", num1 * num2, fun_response())
elif choice == '/':
    if num2 == 0:
        print("Oops! Can't divide by zero!")
    else:
        print("Result:", num1 / num2, fun_response())
else:
    print("Invalid operation! Try again.")

Now your calculator gives motivational messages along with the result!

3. Expanding Features

Want to go even further? Here are some ideas:

• Add exponentiation (x^y).
• Include a square root function.
• Implement a GUI version using Tkinter.

import math

def square_root(x):
    return math.sqrt(x)

Try adding this function to your calculator! 

Conclusion

Building a calculator in Python is super easy and fun!  Now, you can keep improving it by adding more features, making it smarter, or even turning it into a chatbot!

Happy coding!