Skip to content

README.md

Latest commit

 

History

History
69 lines (54 loc) · 2.55 KB

README.md

File metadata and controls

69 lines (54 loc) · 2.55 KB

Workshop 5 - Homework

Topics

  • Dictionaries: creating, accessing, updating, removing
  • Dictionary methods: .get(), .keys(), .values(), .items(), .update()
  • Iterating through dictionaries
  • Nested dictionaries and lists of dictionaries
  • Sets: unique collections and set operations (|, &, -, ^)
  • Using dictionaries and sets to solve practical problems

Tasks

Task 1: Student Grades Dictionary

Create a dictionary grades with at least 5 students (name -> numeric score). Then:

  • Print each student and their grade
  • Print the class average
  • Print the highest-scoring student

Task 2: Letter Counter

Write a function count_letters(text) that returns a dictionary mapping each letter to how many times it appears in text. Ignore spaces and treat upper/lowercase as the same letter.

Test with: "Hello World"

Task 3: Merge Shopping Lists

Two people made shopping lists mapping item -> quantity. Write merge_lists(list1, list2) that returns a combined dictionary where quantities are summed for items that appear in both.

list1 = {"milk": 2, "bread": 1, "eggs": 12}
list2 = {"bread": 2, "cheese": 1, "milk": 1}
# Expected: {"milk": 3, "bread": 3, "eggs": 12, "cheese": 1}

Task 4: Contact Manager

Build a small contact manager where each contact is a dictionary with keys: name, phone, email. Store them all in a list called contacts. Write these functions:

  • add_contact(contacts, name, phone, email)
  • find_by_name(contacts, name) - returns the contact dict or None
  • all_emails(contacts) - returns a list of every email address

Add 3 contacts and test each function.

Task 5: Unique and Common Items (Sets)

Two classrooms submitted their favorite movies. Using sets, find:

  • Movies liked by BOTH classrooms
  • Movies liked by only ONE of them
  • The total number of distinct movies
class_a = ["Inception", "Matrix", "Interstellar", "Joker", "Matrix"]
class_b = ["Matrix", "Titanic", "Joker", "Avatar", "Titanic"]

Task 6: Simple Translator

Create a dictionary that maps English words to another language (at least 8 words). Write translate(sentence, dictionary) that returns the sentence with each known word replaced. Unknown words stay unchanged.

translator = {"hello": "bonjour", "cat": "chat", "dog": "chien"}
translate("hello my cat and dog", translator)
# -> "bonjour my chat and chien"

How to Submit

  1. Complete all tasks in homework.py
  2. Push your work to your GitHub repository
  3. Share the repository link with the instructor

How to Run

python homework.py