ToDoList

Python CLI To-Do List: Daily Routine Tracker

📖 Overview

This project is a Command-Line Interface (CLI) To-Do List application built entirely in Python. Designed as a Daily Routine Tracker, it allows users to manage their tasks seamlessly through an interactive terminal menu.

This project was developed as Project 1: The To-Do List for the DecodeLabs Industrial Training Kit (Batch 2026)[cite: 1]. It demonstrates foundational backend engineering principles, specifically focusing on data management and programmatic logic without relying on external databases.

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✨ Key Features

• Interactive CLI Menu: A continuous while True loop keeps the application active until the user explicitly decides to quit.
• Batch Task Addition: Users are not limited to adding one task at a time; the program asks how many tasks to add and uses a for loop to append them sequentially.
• Safe Task Removal: Features built-in validation to check if a specific task exists in the list before executing the remove() operation, preventing runtime errors.
• Live Task Viewing: Instantly displays the current state of the routine tracker on demand.
• Error Handling: Implements a try-except block to catch ValueError exceptions, ensuring the program does not crash if a user inputs a non-integer value when navigating the menu.

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🛠️ Under the Hood: Technical Architecture

This application is built on core computer science concepts highlighted in the DecodeLabs training:

• The IPO Model: The system follows the standard Input (Data Entry), Process (Modification), and Output (Display) architecture.
• Dynamic Arrays (The Heap): Tasks are stored in a standard Python list, which functions as a dynamic array in memory.
• Volatile Memory: Because the application relies on RAM for storage, the list acts as a volatile container. This means that once the program is terminated, the data is cleared.
• The Gatekeeper: The application logic is encapsulated in a main() function and triggered via the if __name__ == "__main__": block, ensuring professional script execution.

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🚀 Getting Started

Prerequisites

• Python 3.x must be installed on your operating system.
• No external libraries or dependencies are required (built entirely with standard Python).

Installation

1. Clone this repository to your local machine using Git:

   git clone [https://github.com/harshsharma45/ToDoList.git](https://github.com/harshsharma45/ToDoList.git)

2. Open your terminal or command prompt.
3. Navigate to the project directory:

   cd ToDoList

Execution

Run the following command to start the application:

python main.py

(Note: If you named your file something else, replace main.py with your actual file name).

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💻 Usage Example

Upon running the script, you will see the main menu:

To-Do List
welcome to your Daily Routine Tracker List 
Enter your choice
1.Add Task
2.Remove Task
3.View Task
4.Quit

Scenario: Adding Tasks

1. Type 1 and press Enter.
2. The program asks: enter the number of tasks:. Type 2 and press Enter.
3. It asks for the tasks sequentially. Type Read documentation and Write Python code.
4. The program will confirm: Your Tasks = ['Read documentation', 'Write Python code'].

Scenario: Removing a Task

1. Type 2 and press Enter.
2. The program asks: Enter the task to remove:. Type Read documentation.
3. The program will output the updated list: Remaining Tasks = ['Write Python code'].

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🔮 Future Enhancements

• Data Persistence: Implement JSON serialization to save tasks to a disk file so data is not lost when the application closes.
• Numbered List View: Upgrade the viewing feature to use enumerate() for simultaneous indexing and value display.
• Input Sanitization: Add string formatting (like .strip() or .lower()) to handle accidental spaces or capitalization differences when removing tasks.