1
Create a Set
Create a set called 'colors' with: "red", "green", "blue" Print the set.
Theory
Sets store unique items only (no duplicates).
Create a set:
fruits = {"apple", "banana", "orange"}
numbers = {1, 2, 3, 2, 1} # becomes {1, 2, 3}
Add items:
fruits.add("grape")
Remove items:
fruits.remove("banana")
Check if item exists:
if "apple" in fruits:
print("Has apple!")
Set operations:
a = {1, 2, 3}
b = {2, 3, 4}
print(a | b) # Union: {1, 2, 3, 4}
print(a & b) # Intersection: {2, 3}
Exercises in this lesson
2
Remove Duplicates
Given list with duplicates: numbers = [1, 2, 2, 3, 3, 3, 4] Convert it to a set to remove duplicates. Print the length of the set.
3
Set Operations
Given two sets: set_a = {1, 2, 3, 4} set_b = {3, 4, 5, 6} Find and print: 1. Common elements (intersection) using & 2. All elements combined (union) using |