Djoker_tv

🧾 Project Overview

In this project, you will build a Python Expense Tracker App that allows users to:

✔ Add new expenses
✔ View all expenses
✔ Search by category
✔ Calculate total spending
✔ Save all data automatically using a JSON file
✔ Provide a clean menu-based interface

This project teaches:

• JSON handling
• File operations
• Lists & dictionaries
• Functions
• Loops and user input

Final Output: A fully functional console application that stores expenses permanently.

---

🧱 1. Data Structure

Each expense will be stored as a dictionary:

{
    "amount": 25.5,
    "category": "Food",
    "note": "Lunch",
    "date": "2025-01-12"
}

All expenses are stored inside expenses.json as a list.

---

📦 2. Full Python Code (expense_tracker.py)

👉 Create a file named:

expense_tracker.py

👉 Create also an empty JSON file:

expenses.json

Now paste this full code:

import json
import os
from datetime import datetime

# Load existing expenses from JSON file
def load_expenses():
    if os.path.exists("expenses.json"):
        with open("expenses.json", "r") as file:
            try:
                return json.load(file)
            except json.JSONDecodeError:
                return []
    return []

# Save expenses to JSON file
def save_expenses(expenses):
    with open("expenses.json", "w") as file:
        json.dump(expenses, file, indent=4)

# Add a new expense
def add_expense(expenses):
    amount = float(input("Enter amount: "))
    category = input("Enter category (Food, Travel, Bills...): ").capitalize()
    note = input("Enter a short note: ")
    date = datetime.now().strftime("%Y-%m-%d")

    expense = {
        "amount": amount,
        "category": category,
        "note": note,
        "date": date
    }

    expenses.append(expense)
    save_expenses(expenses)
    print("✔ Expense added successfully!\n")

# View all expenses
def view_expenses(expenses):
    if not expenses:
        print("No expenses found.\n")
        return

    print("\n📜 All Expenses:")
    for i, exp in enumerate(expenses, start=1):
        print(f"{i}. {exp['date']} | ${exp['amount']} | {exp['category']} – {exp['note']}")
    print()

# Search expenses by category
def search_by_category(expenses):
    cat = input("Enter category to search: ").capitalize()
    results = [exp for exp in expenses if exp["category"] == cat]

    if not results:
        print("No expenses found for this category.\n")
        return

    print(f"\n🔎 Expenses in '{cat}':")
    for exp in results:
        print(f"- {exp['date']} | ${exp['amount']} | {exp['note']}")
    print()

# Calculate total spending
def total_spent(expenses):
    total = sum(exp["amount"] for exp in expenses)
    print(f"\n💰 Total spending: ${total}\n")

# Main menu
def main():
    expenses = load_expenses()

    while True:
        print("📊 Expense Tracker App")
        print("1. Add Expense")
        print("2. View All Expenses")
        print("3. Search by Category")
        print("4. Total Spending")
        print("5. Exit")
        
        choice = input("👉 Choose an option (1-5): ")

        if choice == "1":
            add_expense(expenses)
        elif choice == "2":
            view_expenses(expenses)
        elif choice == "3":
            search_by_category(expenses)
        elif choice == "4":
            total_spent(expenses)
        elif choice == "5":
            print("Goodbye!")
            break
        else:
            print("❌ Invalid option. Try again.\n")

if __name__ == "__main__":
    main()

---

🖥 3. How to Run the Program

1. Save both files in the same folder:
   • expense_tracker.py
   • expenses.json (empty file)
2. Open CMD in that folder.
3. Run:

python expense_tracker.py

You will see:

📊 Expense Tracker App
1. Add Expense
2. View All Expenses
3. Search by Category
4. Total Spending
5. Exit
👉 Choose an option (1-5):

---

📌 4. Example Usage

➕ Add Expense:

Enter amount: 12.5
Enter category: Food
Enter note: Sandwich
✔ Expense added successfully!

📜 View All:

1. 2025-01-12 | $12.5 | Food – Sandwich

🔍 Search Category:

Enter category: Food
- 2025-01-12 | $12.5 | Sandwich

💰 Total Spending:

Total spending: $12.5

---

🧠 5. Summary

Feature	Description
Add Expense	Add amount, category, note, date
View Expenses	List all recorded expenses
Category Search	Filter by category
Total Spending	Auto-calculates all expenses
JSON Storage	Saves data permanently

---

🎉 Project Completed!

This is a real, practical Python app that can evolve into:

✔ GUI version (Tkinter)
✔ Mobile app (Kivy)
✔ Dashboard with charts (Matplotlib)
✔ Cloud-based version

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