What are Python’s data structures?

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ICSM Computer · Answer

Python provides several built-in data structures, and it also allows you to create custom ones. These are mainly divided into
primitive and non-primitive (collection) data structures.
1. Primitive Data Structures
These are the most basic types:
int → integers (10, -3)float → floating-point numbers (3.14, -2.5)complex → complex numbers (3+4j)bool → boolean values (True, False)str → strings ("hello", 'Python')
2. Non-Primitive (Collections) Data Structures
These are used to store multiple values.
a. List
Ordered, mutable, allows duplicates.
Example:
fruits = ["apple", "banana", "cherry"]
b. Tuple
Ordered, immutable, allows duplicates.
Example:
coordinates = (10, 20)
c. Set
Unordered, mutable, does not allow duplicates.
Example:
unique_numbers = {1, 2, 3, 3}
# {1, 2, 3}
d. Dictionary (dict)
Unordered (insertion-ordered since Python 3.7), mutable, stores key–value pairs.
Example:
student = {"name": "Alice", "age": 20}
3. Specialized Data Structures (from collections module)
deque → double-ended queueCounter → frequency counterOrderedDict → dict with ordering preserved (now built-in by default in Python 3.7+)defaultdict → dict with default values for missing keysnamedtuple → tuple with named fields
4. User-Defined Data Structures
You can also implement:
Stack (using list or deque)Queue (using deque or queue.Queue)Linked ListTreeGraphHash Table (dict is already a hash table internally)
In short:
Built-in collections → list, tuple,
set, dictExtended collections → deque, Counter,
defaultdict, etc.Custom → stack, queue, linked list, trees, graphs.
and

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What are Python’s data structures?

Anubhav Kumar

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1 Answers

1. Primitive Data Structures

2. Non-Primitive (Collections) Data Structures

a. List

b. Tuple

c. Set

d. Dictionary (dict)

3. Specialized Data Structures (from `collections` module)

4. User-Defined Data Structures

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