Answer
A set stores unique values, while a dictionary stores key-value pairs. • Set elements must be hashable. • Dictionary keys must be hashable, but values can be any objects. • Both provide fast average-case membership testing in their keys or elements.
💡 Simple Example
numbers = {1, 2, 3}
labels = {1: 'one', 2: 'two'}
print(2 in numbers, 2 in labels)
Output
True True
⚡ Quick Revision
A set stores values; a dictionary maps keys to values.