How To Make A Calculator In Python (In Just 5 Minutes)

Hey there, for today’s tutorial, we will discuss How To Make A Calculator in Python (in just 5 minutes) that can add, subtract, multiply, and divide depending upon the user input.

What is a Calculator in Python?

A Calculator In Python is a device that uses numbers to execute arithmetic operations.

Only addition, subtraction, multiplication, and division are possible with the most basic calculators.

Importance of Calculator

Calculators assist pupils to work faster, allowing them to solve more problems in less time.

As a result, you can raise the number and complexity of issues you introduce in each lesson without increasing the amount of time you spend on problem-solving.

Project Details and Technology

How To Make A Calculator In Python

These are the step-by-step guides on How To Make A Calculator.

1. Addition Method

First, we want to add this method for addition.

Code:

# This function adds two numbers
def add(x, y):
    return x + y

2. Subtraction Method

Next method is for subtraction.

Code:

# This function subtracts two numbers
def subtract(x, y):
    return x - y

3. Multiplication Method

Next method is for multiplication.

# This function multiplies two numbers
def multiply(x, y):
    return x * y

4. Division Method

Next method is for division.

# This function divides two numbers
def divide(x, y):
    return x / y

After applying the four methods which is Addition, Subtraction, Multiplication and Division, we want to create a selection menu.

5. Main Menu

And the final process is for the main menu of the process.

Code:

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

while True:
    # take input from the user
    choice = input("Enter choice(1/2/3/4): ")

    # check if choice is one of the four options
    if choice in ('1', '2', '3', '4'):
        num1 = float(input("Enter first number: "))
        num2 = float(input("Enter second number: "))

        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))

        # check if user wants another calculation
        # break the while loop if answer is no
        next_calculation = input("Let's do next calculation? (yes/no): ")
        if next_calculation == "no":
            break

    else:
        print("Invalid Input")

Complete and Runnable Source Code

This is the runnable source code for the calculator using Python.

# Program make a simple calculator

# This function adds two numbers
def add(x, y):
    return x + y


# This function subtracts two numbers
def subtract(x, y):
    return x - y


# This function multiplies two numbers
def multiply(x, y):
    return x * y


# This function divides two numbers
def divide(x, y):
    return x / y


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

while True:
    # take input from the user
    choice = input("Enter choice(1/2/3/4): ")

    # check if choice is one of the four options
    if choice in ('1', '2', '3', '4'):
        num1 = float(input("Enter first number: "))
        num2 = float(input("Enter second number: "))

        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))

        # check if user wants another calculation
        # break the while loop if answer is no
        next_calculation = input("Let's do next calculation? (yes/no): ")
        if next_calculation == "no":
            break

    else:
        print("Invalid Input")

About The Project For Calculator in Python

The Calculator Python Program is developed in the Python programming language. In this article, I will show you How To Make A Simple Calculator In Python.

Major Functionalities Of The System

• Performing Addition
  
• Performing Subtraction
  
• Performing Multiplication
  
• Performing Division

This Calculator In Python also includes a downloadable Project With Source Code for free, just find the downloadable source code below and click to start downloading.

By the way, if you are new to Python programming and don’t have any idea what Python IDE to use, I have here a list of the Best Python IDE for Windows, Linux, and Mac OS for you. Additionally, I also have here How to Download and Install the Latest Version of Python on Windows.

To start executing a Calculator Project With Source Code, make sure that you have installed Python on your computer.

Steps On How To Run The Project

Download the Source Code below

Summary

This article is a way to enhance and develop our skills and logic ideas which is important in practicing the Python programming language which is the most well-known and most usable programming language in many companies.

Using any data collection method, the Valid solution allows you to have up-to-date information on your inventory and all stock movement through the web.

Inquiries

If you have any questions or suggestions about the Program For Calculator In Python With Source Code, please feel free to leave a comment below.