# Calculator Program In Python

If you are fresher in Python Programming and you want to create your first project in Python Programming then this blog “Calculator Program In Python” is for you. Create your first project “Calculator” using python programming language.

There are some questions that come to your mind, like what methods are used to create calculator in python programming. In this blog will explore how to create a calculator in Python, step by step.

## Simple Calculator Program In Python Using Function

Output of the code-

Logic of code –

Used Arithmetic Operators In Python

• In this Code we used four operations – Addition, Subtraction, Multiplication
• Division operator used for checks for division by zero

User Input and Operator Handling

• “main function” takes user input for numbers and operators.
•  Converts input to floats for decimal calculations.
• Uses if-elif-else to determine the selected operation.

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## Simple Calculator Program In Python Using A Class

Output of the code:

Logic behind the Code:

• Defines a “Calculator” class with methods for addition, subtraction, multiplication, and division.
• Creates an instance of the Calculator class.
• Takes user input for two numbers and an operator.
• Performs the selected operation using the corresponding method of the Calculator object.
• Displays the result to the user.

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## Simple Calculator Program In Python Using Conditional Statements:

Output Of the code:

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## How to build a calculator GUI in Python?

Step 1: Tkinter Setup

Import the “tkinter” library and create the main Tk instance.

Step 2: Calculator Class:

Create a “Calculator class” to encapsulate the calculator’s functionality.

Step 3: Entry Widget:

Use the Entry widget to display input and results.

Step 4: Buttons:

Create buttons for digits (0-9) and operations (+, -, *, /, =, etc.).

Step 5: Button Callbacks:

Set up callbacks for button clicks. The on_button_click method handles button presses.

Step 6: Evaluate Expression:

When the “=” button is clicked, use eval() to evaluate the expression and display the result.

Step 7: Main Loop:

Start the main loop with root.mainloop() to keep the GUI running.

Calculator Program:

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## Conclusion

I hope you get a better understanding of the Calculator Program In Python.

In this blog will explain some easy methods to create calculator in Python Programming –

• Create Calculator Using Function
• Create Calculator Using a Class
• Create Calculator using conditional statement

Whether you are a beginner looking to start or a working professional wanting to improve your skills, this blog will help you understand Python Programming simplicity and usefulness in software development better.