How to Create Basic Calculator in Python Tutorial

In this tutorial, we will create a "How to Create a Basic Calculator in Python". The purpose of this tutorial is to teach you the process of building a calculator. We will try to understand the steps involved in making this calculator. I will provide a sample program to demonstrate the actual coding of this tutorial.

This tutorial is simple and easy to understand; just follow the instructions I provide, and you can also do it yourself with ease. The program give you the basic functionality of the calculator app. I will do my best to provide you with the most simplified method of creating this program, called "Basic Calculator". So, let's start with the coding.

Getting Started:

First you will have to download & install the Python IDLE's, here's the link for the Integrated Development And Learning Environment for Python https://www.python.org/downloads/.

Creating Main Function

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):
    return x / y
 
while True:
    print("\n\n========== Basic Calculator ==========\n\n")
    print("Choose an operation: ")
    print("1.Add")
    print("2.Subtract")
    print("3.Multiply")
    print("4.Divide")
 
    choice = input("Enter your choice: ")
 
 
    if choice in ('1', '2', '3', '4'):
        try:
            num1 = float(input("Enter first number: "))
            num2 = float(input("Enter second number: "))
        except ValueError:
            print("Invalid input. Please enter a number.")
            continue
 
        if choice == '1':
            print(num1, "+", num2, "=", add(num1, num2))
 
        elif choice == '2':
            print(num1, "-", num2, "=", subtract(num1, num2))
 
        elif choice == '3':
            print(num1, "*", num2, "=", multiply(num1, num2))
 
        elif choice == '4':
            print(num1, "/", num2, "=", divide(num1, num2))
 
 
        next_calculation = input("Try another calculation? (yes/no): ")
        if next_calculation == "no":
          break
    else:
        print("Invalid Input") 

In the code that I provided, we first created several functions to handle operations for our calculator, such as adding and subtracting numbers.

Then, we proceed to enclose the entire code with a while loop to ensure the continuation of the program. To get the result, we declare the operation function that appends the two numbers to it.

Output:

The How to Create Basic Calculator in Python source code that I provide can be download below. Please kindly click the download button.

There you have it we successfully created How to Create Basic Calculator in Python. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

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