Answer
A dictionary is a mutable mapping from hashable keys to values. • Keys are unique within a dictionary. • Dictionaries preserve insertion order. • Looking up a missing key with brackets raises KeyError.
💡 Simple Example
user = {'name': 'Maya', 'role': 'admin'}
print(user['name'])
Output
Maya
⚡ Quick Revision
Dictionaries map unique hashable keys to values.