Data Structure Conversions

Feature

Tuple

List

Dictionary

Set

Bracket type

()

[]

{}

{}

Creation

my_tuple = (1, 2, 3)

my_list = [1, 2, 3]

my_dict = {'key1': 'value1'}

my_set = {1, 2, 3}

Mutability

Immutable

Mutable

Mutable

Mutable (elements are immutable)

Order

Maintains order

Maintains order

No inherent order

No specific order elements are unique

Duplicates

Allows duplicates

Allows duplicates

Keys must be unique; values may repeat

No duplicates

Access

Indexing (my_tuple[0])

Indexing (my_list[0])

Key-based (my_dict['key1'])

No indexing; use iteration or in operator

Operations

Limited concatenation, slicing

Extensive concatenation, slicing

Key-based operations

Set operations

Use Cases

Fixed collection of items

A dynamic collection of items

Associative arrays, key-value pairs

Unique collection, membership testing