🧮 Advanced Calculator (Tkinter GUI)

A Python project built with Tkinter for practicing GUI development.
This calculator supports both basic and advanced operations, with a history window and a simple resizable interface.

⚠️ Note: This project is not fully optimized — it was made as a learning exercise to explore GUI programming in Python.

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✨ Features

• Basic operations: +, -, *, /
• Decimal input & backspace support
• Advanced functions:
  • Trigonometry: sin, cos, tan
  • Logarithms: log, log10
  • Square root, square (a²)
• Expression evaluation using Python’s eval()
• History window for last 5 results
• Expandable/advanced mode (resizes UI for extra functions)
• Error handling (e.g., invalid input)

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🖥️ Screenshots

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🚀 How to Run

1. Make sure you have Python 3.x installed.
2. Run the script with:

   python calculator.py
   

📖 Learning Goals

This project was created to:

Practice Tkinter GUI layout

Work with event handling (button callbacks)

Explore math functions in Python

Learn how to manage state and history in GUI apps

🛠️ Possible Improvements

Better input validation (reduce reliance on eval)

Cleaner UI layout with grid/pack

Save history between sessions

Dark/light mode toggle

Optimized code structure (OOP)

📜 License

This project is open source and available under the MIT License.