Python Tuples

Python Tuples

Tuples are sequential data types in Python.

A Tuple is an immutable data type in Python i.e. once defined it can not be changed.

Use round brackets"()" to define a Tuple in Python and comma(,) to separate elements.

We can access Tuple elements using the index value of the element.

Like lists, there is both side indexing in Tuples in Python i.e. from start indexing starts with “0” and from the end, indexing starts with “-1“.


Example


myTuple = (1, 2, 3, 4, "Hello", "World")  # defining a list
print(myTuple)  # printing a list
print(myTuple[0])  # printing first element
print(myTuple[1])  # printing 2nd element
print(myTuple[5])  # printing last element
print(myTuple[-1])  # printing last element
print(myTuple[-2])  # printing last 2nd element

Output


(1, 2, 3, 4, 'Hello', 'World')
1
2
World
World
Hello

One Element Tuple


If we want to declare a one element Tuple then we need to put a comma(,) after the element.


Example

myTuple = (1)
myTuple1 = ("1")
myTuple2 = (1,)
print(type(myTuple))
print(type(myTuple1))
print(type(myTuple2))

Output

<class 'int'>
<class 'str'>
<class 'tuple'>


Range of Indexes


Like in Lists, we can specify the range of indexes to the tuples to return a part from the tuple.

When specifying a range, the return value will be a new tuple with the specified items excluding the last value.


Example

myTuple = (1, 2, 3, 4, "Hello", "World")  # index starts with 0
print(myTuple[0:3])  # 0 to 3-1=2(excluding last value)
print(myTuple[4:5])
print(myTuple[-6:-1])  # negative indexing similiar to list
print(myTuple[-3:-2])

Output

(1, 2, 3)
('Hello',)
(1, 2, 3, 4, 'Hello')
(4,)

Changing Element Values


It is not possible to change Tuple values after a Tuple is created.

Python will show you an error if we try do change the values.


Example

myTuple = (1, 2, 3, 4, "Hello", "World")
myTuple[0] = 2
print(myTuple)

Output

Traceback (most recent call last):
  File "/tmp/sessions/95fd31eb9f7a5397/main.py", line 2, in <module>
    myTuple[0] = 2
TypeError: 'tuple' object does not support item assignment

Deleting a Tuple


We can delete an entire Tuple using the "del" keyword.


Example

myTuple = (1, 2, 3, 4, "Hello", "World")
del myTuple
print(myTuple)

Output

Traceback (most recent call last):
  File "/tmp/sessions/1dd8fce2f6c4006a/main.py", line 3, in <module>
    print(myTuple)
NameError: name 'myTuple' is not defined

We can delete an entire Tuple but it is not possible to delete one or more elements of a Tuple. Because it will be considered as a change in Tuple which is not possible as Tuples are immutable i.e. can not be changed or modified after their creation.


Example

myTuple = (1, 2, 3, 4, "Hello", "World")
del myTuple[0]

Output

Traceback (most recent call last):
  File "/tmp/sessions/5fa1dff2b174e015/main.py", line 2, in <module>
    del myTuple[0]
TypeError: 'tuple' object doesn't support item deletion


Tuple Length


We can "len()" to know the length of a Tuple.

"len()" function is used to calculate the length of other Python objects as well like "Strings and Lists" .


Example

myString = "I am a String"
myList = ["I", "am", "a", "List"]
myTuple = ("I", "am", "a", "Tuple")
print(len(myString))
print(len(myList))
print(len(myTuple))

Output

13
4
4

Joining Two Tuples


We can add or join two or more tuples using "+" operator.


Example

myTuple1 = (1, 2, 3, 4)
myTuple2 = (5, 6, 7, 8)
myTuple3 = (9, 10, 11, 12)
add1 = myTuple1 + myTuple2
add2 = myTuple1 + myTuple2 + myTuple3
print(add1)
print(add2)

Output

(1, 2, 3, 4, 5, 6, 7, 8)
(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

Tuple Constructor


We can use "tuple()" constructor to create a Tuple.


Example

myStr = "1234"
myList = [1, 2, 3, 4]
myTuple1 = tuple((myStr))
myTuple2 = tuple((myList))
emptyTuple = tuple()
print(emptyTuple)
print(myTuple1)
print(myTuple2)

Output

()
('1', '2', '3', '4')
(1, 2, 3, 4)

Tuple Methods


There are two built-in methods in Python that we can use on Tuples.


1. count()


It returns the number of times a specific value is found inside a Tuple.


Example

myTuple = (1, 2, 3, 4, 1, 2, 1)
print(myTuple.count(1))

Output

3

2. index()


Searches for the specific value inside a Tuple and returns its index.


Example

myTuple = (1, 2, 3, 4)
print(myTuple.index(2))

Output

1



Also Read:

  • Oracle Hiring for Python internship 2023: Apply Now
    Job Description Oracle is hiring for a Python development internship in 2023. Oracle is looking for top-notch interns who are passionate about solving complex problems. You will work with others to design and construct cutting-edge new systems from the ground up using your knowledge and creativity. You will be writing code, completing programming projects, and…
  • Capgemini hiring freshers and experienced in bulk with CTC 5-15 LPA. Apply now!
    Position- Software EngineerRequired Skills– Java, Microservices, Spring BootShort Description- Fulltime, entry-levelLink to Apply- Click here to Apply Now Position- Software AnalystRequired Skills– Microsoft SQL Server, JSON, Google Charte API, Javascript, PostgreSQLShort Description- Fulltime, entry-levelLink to Apply- Click here to Apply Now Position- Data AnalystRequired Skills– Agile, SQL, Visio, data warehouse, ODS, reporting toolsShort Description- Fulltime,…
  • IIT Kanpur’s Python Learning Program: Apply Now
    IIT Kanpur has recently released a notification for its Summer Training program on Python programming language. This is organized by IIT Kanpur Intensive Training School (ITS). In this Summer Python program, you will be learning and working on Machine Learning, Data Science, and Deep Learning. You will also be learning various Python libraries like NUMPY,…
  • Microsoft Giving Free Machine Learning Course: Enroll Now
    Microsoft offers many courses for free on its website. There are more than 4000 courses and all are available free of cost. Today, I will show you a Free Machine learning cum data science course where you will learn Machine learning with data science from scratch. Let’s start. Microsoft Free Machine Learning course overview Name…
  • Accenture Giving Free Developer Certificate in 2023
    Accenture recently announced Accenture Virtual Program 2023 for freshers of the Computer science stream. There are 2 categories in the Virtual Program The Consultant Program and The Developer Program. In The Consultant Program, you will learn how to handle clients and in The Developer Program you will be learning and working on the following technologies:…


Share:
Avatar of Harry

Author: Harry

Hello friends, thanks for visiting my website. I am a Python programmer. I, with some other members, write blogs on this website based on Python and Programming. We are still in the growing phase that's why the website design is not so good and there are many other things that need to be corrected in this website but I hope all these things will happen someday. But, till then we will not stop ourselves from uploading more amazing articles. If you want to join us or have any queries, you can mail me at admin@copyassignment.com Thank you