🌱 Set Data Type

Last Updated: 17th August 2025

  • A set is an unordered collection of unique items.
  • Duplicates are automatically removed.
  • Sets are mutable (can add/remove items), but items inside must be immutable (numbers, strings, tuples).
  • Sets do not support indexing because they are unordered.

Hinglish Tip 🗣: Set ko socho jaise ek bag jisme unique cheezein rakhi jaati hain. Agar same item dobara add karoge, duplicate ignore ho jayega.

✏ Creating Sets

# empty set
s = set()

# using curly braces
fruits = {"apple", "banana", "cherry"}

# duplicates are removed automatically
nums = {1, 2, 2, 3}   # {1,2,3}

# using set() constructor
letters = set("hello")  # {'h','e','l','o'}

🔎 Accessing Items

fruits = {"apple", "banana", "cherry"}
for fruit in fruits:
    print(fruit)

💡 Quick Practice

  • Create a set of your favorite fruits.
  • Loop through the set and print each fruit.
  • Exercise
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