A contact book is a simple database where you store information about people. In this project, you will write a program that manages contacts using a dictionary data structure.

Your program must meet the following specifications:

• Create a contacts dictionary where each contact has a name (key) and information (value)
• Each contact’s information should include: phone number, email, and address
• Display a menu with options: add contact, view all contacts, search for a contact, delete a contact, or quit
• Implement each menu option as a function

For example:

Contact Book Menu
1. Add contact
2. View all contacts
3. Search for contact
4. Delete contact
5. Quit

Choice: 1
Enter name: Alice
Enter phone: 555-1234
Enter email: [email protected]
Enter address: 123 Main St

Contact saved!

Choice: 2
=== All Contacts ===
Alice - Phone: 555-1234, Email: [email protected], Address: 123 Main St

Choice: 3
Enter name to search: Alice
Found: Alice
Phone: 555-1234
Email: [email protected]
Address: 123 Main St

Choice: 5
Goodbye!

Working with Dictionaries

You can create a dictionary and add key-value pairs:

contacts = {}
contacts["Alice"] = {"phone": "555-1234", "email": "[email protected]", "address": "123 Main St"}

You can access values by key:

print(contacts["Alice"]["phone"])  # 555-1234

You can check if a key exists:

if "Alice" in contacts:
    print("Contact found")

You can loop through a dictionary:

for name in contacts:
    info = contacts[name]
    print(f"{name}: {info['phone']}")

You can delete a key-value pair:

del contacts["Alice"]

Example Code

def add_contact(contacts):
    # TODO: Get name and details, add to dictionary, print confirmation
    pass

def view_all_contacts(contacts):
    # TODO: Loop through contacts and print each one, handle empty book
    pass

def search_contact(contacts):
    # TODO: Search by name, print info if found or error if not
    pass

def delete_contact(contacts):
    # TODO: Delete by name, print confirmation or error
    pass

# Main program
contacts = {}

while True:
    print("\n=== Contact Book Menu ===")
    print("1. Add contact")
    print("2. View all contacts")
    print("3. Search for contact")
    print("4. Delete contact")
    print("5. Quit")
    
    choice = input("\nChoice: ")
    
    if choice == "1":
        add_contact(contacts)
    elif choice == "2":
        view_all_contacts(contacts)
    elif choice == "3":
        search_contact(contacts)
    elif choice == "4":
        delete_contact(contacts)
    elif choice == "5":
        print("Goodbye!")
        break
    else:
        print("Invalid choice. Try again.")