☑ Command-Line To-Do List with Python

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➡ Tools:

✔ Python:

            Versatile programming language used for the project's functionality

✔ Dictionaries:

            Data structures storing tasks as key-value pairs (task number -> description & completion status)

✔ "rich" library:

            Adds color and formatting to the command-line interface for visual appeal

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➡ Steps and Efficiency:

✔ Initialization:

    A ToDoList class is created with an empty dictionary (all_tasks) to store tasks.

✔ User interaction:

    A loop presents a colorful menu with numbered options for adding, marking complete, viewing tasks, and exit. User input is validated for valid choices.
    Validate user input based on valid choices (1-4).
    Route user actions based on their choice (add, mark complete, view, or exit).

✔ Adding tasks:

    Assign a unique key based on dictionary size, checking if it's already taken and added with their description and initial "incomplete" status.
    Display a confirmation message based on successful addition.
    A confirmation message in blue indicates successful addition.

✔ Marking completion:

    User specifies the task number. 
    Check if the task number exists in the dictionary.
    If found, the task's "completed" status is set to True, and a green message confirms the update. 
    If not found, a red message indicates the task number doesn't exist.

✔ Viewing tasks:

    Check if there are tasks, in the dictionary (not empty).
    If tasks exist, display a header and iterate over them, showcasing its number, description, and completion status (red for incomplete, yellow for complete).
    If no tasks are present, a red message indicates an empty list.

✔ Exit:

    Check if the chosen option is "exit".
    If true, display a message and terminate the program.

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