Contact Book

The Python Contact Book Project provides an interactive console text-based application where users can store, retrieve, edit, and delete their contacts. User can store their contact's name, phone number, email, and address.

Project Implementation

The primary data structure was a built-in Python dictionary, which was tasked with managing contact entries. This structure was chosen due to its efficiency in handling these particular operations (O(1) average complexity for add, delete, get operations).

Project Structure

The project consists of the following files and directories.

src
|   ├── contact_book.py
|   └── main.py
|
README.md  

The project structure was designed to be simple and clean.

• README.md: this document providing project description and documentation
• contact_book.py: the Python script that defines the ContactBook class which encapsulates the core functionalities of the application
• main.py: the main script which interacts with the user and uses ContactBook class methods to provide the desired functionality

ContactBook Class

The core logic of the application is implemented in ContactBook class:

• The add_contact method allows for new entries to be made to the 'book'. Each entry must be unique by name.

• The update_contact method permits updates to contact information.

• The view_contacts method lists all contacts in the address book along with their information.

• The delete_contact method allows for existing contacts to be removed from the book.

The main.py file serves as an interface between the user and the ContactBook class instance. It gets user inputs, calls the necessary methods and handles the application flow.

User Interface

The interface is a simple console-based menu that offers users options to add, view, edit, delete contacts or quit the program.

Installation and Usage

To run the program, navigate to the project directory and run the following command:

python src/main.py