Project 7 — Contacts Manager

Build an object-oriented contacts manager with name, phone, email, and tags. Support search, sort, and CSV/JSON export.

OOPJSONCSVsearchcontacts

Duration

⏱ 2.5 hours

Level

📊 Intermediate Applied

Prerequisite

🎯 Intermediate Week 7

OUTCOME

An OOP contacts app with search, sort, and export features

What you'll learn

1Model a Contact with a dataclass
2Implement ContactBook CRUD operations
3Full-text search across all fields
4Export to CSV and JSON formats

Features

Contact: name, phones (list), emails (list), tags (list), notes
Commands: add, show, edit, delete, search, list, export csv/json, quit
Search: case-insensitive full-text across name, email, tags
Sort: by name (default), by date added

Sample Session

text

> add
  Name: Alice Johnson
  Phone: 010-1234-5678
  Email: alice@example.com
  Tags (comma-sep): work, python
  Contact saved.

> search python
  [1] Alice Johnson  010-1234-5678  alice@example.com  [work, python]

> export csv contacts.csv
  Exported 1 contacts to contacts.csv

📝 Exercises

Try them yourself first, then open the solution to compare.

Exercise 1

Build the contacts manager

Goal: Implement the contacts manager with all features.

Requirements

Contact dataclass with all fields
CRUD + search
JSON persistence
CSV export

Example code / lecture materials

All lecture materials and example code are openly available on GitHub.

View on GitHub ↗