dcsimg
Main » TERM » T »

Tuple Definition & Meaning

A tuple is a finite ordered list of elements. Tuples are written by listing comma-separated elements within parentheses. Similar to lists, they are sequences. The main difference between tuples and lists is that tuples cannot be changed once assigned, whereas lists can. Tuples are occasionally written with square or angle brackets.

Most typed functional programming languages such as Lisp, Python, and Linda use tuples as product types. Uses for the tuple as a data type include passing a string of parameters from one program to another and representing a set of value attributes in a relational database. In some languages, tuples are embedded within other tuples within parentheses or brackets.

Some programming languages offer an alternative to tuples known as record types, which feature unordered elements accessed by label. Languages such as Haskell combine tuple product types and unordered record types into a single construct.

Python tuple

In Python, lists and tuples are two of the most commonly used data structures. In addition to the aforementioned difference of being changeable, other differences include:

  • Iterating over elements of a tuple is faster compared to iterating over a list.
  • In Python, elements of a tuple are enclosed in parentheses whereas elements of list are enclosed in square brackets.
  • If data needs to remain unchanged over time, a tuple is the preferred data type. If data may need to be changed in the future, a list should be used.

Python tuple example

A tuple can have any number of items that are of different types such as integer, float, and string. Here's an example of a tuple in Python:

Program to run in Python:

# Different types of tuples

# Empty tuple
my_tuple = ()
print(my_tuple)

# Tuple having integers
my_tuple = (1, 2, 3)
print(my_tuple)

# tuple with mixed datatypes
my_tuple = (1, "Hello", 3.4)
print(my_tuple)

# nested tuple
my_tuple = ("mouse", [8, 4, 6], (1, 2, 3))
print(my_tuple)

Output:

()
(1, 2, 3)
(1, 'Hello', 3.4)
('mouse', [8, 4, 6], (1, 2, 3))









LATEST ARTICLES
Texting & Chat Abbreviations

From A3 to ZZZ we list 1,559 text message and online chat abbreviations to help you translate and understand today's texting lingo. Includes Top... Read More »

Huge List of Computer Certifications

Have you heard about a computer certification program but can't figure out if it's right for you? Use this handy list to help you decide. Read More »

STUDY GUIDES
Computer Architecture Study Guide

Computer architecture provides an introduction to system design basics for most computer science students. Read More »

Network Fundamentals Study Guide

Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »

The Five Generations of Computers

Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use... Read More »