Introduction

Graphical User Interfaces (GUIs) make it easy to create interactive applications. Python's tkinter library allows you to build GUI applications quickly. In this guide, we'll explore how to create a Python Calculator GUI using tkinter. We'll provide sample code to demonstrate the process.

Prerequisites

Before you start building a Python Calculator GUI, ensure you have the following prerequisites:

• Python installed on your system.
• Basic knowledge of Python programming.

Creating a Python Calculator GUI

Let's create a basic Python Calculator GUI using tkinter. In this example, we'll build a simple calculator with a graphical interface.

import tkinter as tk
# Function to update the display
def update_display(value):
    current_value = display_var.get()
    display_var.set(current_value + value)
# Function to perform the calculation
def calculate():
    try:
        result = eval(display_var.get())
        display_var.set(result)
    except Exception as e:
        display_var.set("Error")
# Create the main application window
root = tk.Tk()
root.title("Python Calculator")
# Create a display entry widget
display_var = tk.StringVar()
display = tk.Entry(root, textvariable=display_var, font=("Arial", 20))
display.grid(row=0, column=0, columnspan=4)
# Create calculator buttons
buttons = [
    '7', '8', '9', '/',
    '4', '5', '6', '*',
    '1', '2', '3', '-',
    '0', 'C', '=', '+'
]
row, col = 1, 0
for button in buttons:
    tk.Button(root, text=button, font=("Arial", 16), command=lambda b=button: update_display(b) if b != '=' else calculate()).grid(row=row, column=col)
    col += 1
    if col > 3:
        col = 0
        row += 1
# Run the tkinter main loop
root.mainloop()
        

Using the Calculator

After running the Python Calculator GUI code, you can use the graphical interface to perform calculations by clicking the buttons.

Conclusion

Building a Python Calculator GUI using tkinter is a practical example of GUI application development. You can expand this project by adding more advanced features, improving the user interface, and customizing the calculator.