Learn / Python / Dictionaries and Sets

Beginner 14 min

Dictionaries and Sets

Key-value maps and unordered unique collections.

What you will learn

  • Read and write dict keys
  • Iterate .items()
  • Use sets for uniqueness
python
user = {"id": 1, "email": "dev@example.com"}
user["role"] = "admin"

for key, val in user.items():
    print(key, val)

tags = {"python", "api", "python"}
print(tags)

Try it yourself

Build a word-frequency dict from a sentence string.