Project 7 · Practice Projects
Build an object-oriented contacts manager with name, phone, email, and tags. Support search, sort, and CSV/JSON export.
Difficulty: Lv ★★ | Prerequisite Knowledge: Basic weeks 7-8
Search, modify, delete name·phone·email (partial match)
{"Name": {"phone": "...", "email": "..."}}add, find <keyword>, update, del, listTry the assignment yourself first — comparing your attempt with a working solution is where most of the learning happens.
"""Address Book — Partial Match Search"""
contacts = {}
def add():
name = input("Name:").strip()
if not name: return
phone = input("Phone:").strip()
email = input("Email:").strip()
contacts[name] = {"phone": phone, "email": email}
print("Added")
def find(query):
matched = [(n, c) for n, c in contacts.items() if query.lower() in n.lower()]
if not matched:
print("None"); return
for name, c in matched:
print(f" {name} | {c['phone']} | {c['email']}")
def show_all():
for name in sorted(contacts):
c = contacts[name]
print(f" {name}: {c['phone']}, {c['email']}")
def main():
while True:
raw = input("Command (add/find <q>/del <name>/list/quit):").strip()
if not raw: continue
parts = raw.split(maxsplit=1)
cmd = parts[0]
arg = parts[1] if len(parts) > 1 else ""
if cmd == "quit": break
elif cmd == "add": add()
elif cmd == "find":
if arg: find(arg)
else: print("Enter keyword")
elif cmd == "del":
if arg in contacts:
del contacts[arg]; print("Delete")
else:
print("None")
elif cmd == "list":
show_all()
if __name__ == "__main__":
main()Work through the Python Series track on your own, or join a guided cohort at our Pitampura campus and online.