13th-2-2026

Budget App (FreeCodeCamp – Python OOP, class and Objects)

Overview

This project implements a simple budget management system using Object-Oriented Programming (OOP) in Python. It allows users to create spending categories, track deposits and withdrawals, transfer funds between categories, and generate a visual chart showing spending distribution.

This project reinforces:

• Class design and encapsulation
• State management using object attributes
• String formatting and precise output control

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Features

Category Class

Each budget category:

• Stores transactions in a ledger

• Tracks balance automatically

• Supports:

  • Deposits
  • Withdrawals (with balance checks)
  • Transfers between categories
  • Clean, formatted string output

Spending Chart

• Displays percentage spent per category
• Percentages are rounded down to the nearest 10
• Output is an ASCII bar chart with exact spacing (as required by FreeCodeCamp)

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Key Concepts Practiced

• Classes and objects
• Encapsulation of data and behavior
• Method reuse (transfer uses withdraw + deposit)
• Iteration and aggregation
• Precise string formatting and alignment

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How to Run

python budget_app.py

Make sure the following block is at the file level:

if __name__ == "__main__":
    main()

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Notes

• Output formatting (including spaces) is intentional and required
• The project is designed to match FreeCodeCamp’s automated tests exactly

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This project focuses on thinking in systems, not just writing code.