Tuples In Python Class 11 Notes

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Tuples in Python Class 11 Notes, Tuples are similar to lists, but they are immutable. This chapter explains how to create a tuple and how to use it. Our Class 11 notes explain the concept in a simple method with examples to build a strong Python foundation.

Introduction to Tuples

A Python tuple is a collection of different data types, such as integers, floats, strings or lists. A tuple is an immutable collection of elements. A tuple is a sequence of elements enclosed within parentheses ().

Example 1 –

tuple1 = (1, 2, 3, 4, 5)
print(tuple1)

Output:
(1, 2, 3, 4, 5)

Example 2 –

tuple1 = ('Economics',87,'Accountancy',89.6)
print(tuple1)

Output:
('Economics', 87, 'Accountancy', 89.6)

Example 3 –

tuple1 = (10,20,30,[40,50])
print(tuple1)

Output:
(10, 20, 30, [40, 50])

Example 4 –

tuple1 = (1,2,3,4,5,(10,20))
print(tuple1)

Output:
(1, 2, 3, 4, 5, (10, 20))

Accessing Elements in a Tuple

Elements of a tuple can be accessed in the same way as a list or string using indexing and slicing.

Example 1 –

tuple1 = (2,4,6,8,10,12)
print(tuple1[0])

Output:
2

Example 2 –

tuple1 = (2,4,6,8,10,12)
print(tuple1[3])

Output:
8

Example 3 –

tuple1 = (2,4,6,8,10,12)
print(tuple1[15])

Output:
IndexError: tuple index out of range

Example 4 –

tuple1 = (2,4,6,8,10,12)
print(tuple1[1+4])

Output:
12

Example 5 –

tuple1 = (2,4,6,8,10,12)
print(tuple1[-1])

Output:
12

Tuple is Immutable

Tuple is an immutable data type. It means that the elements of a tuple cannot be changed after it has been created. An attempt to do this would lead to an error.

Example –

tuple1 = (1,2,3,4,5)
tuple1[4] = 10

Output:
TypeError: 'tuple' object does not support item assignment

Tuple Operations

Concatenation

Python allows us to join tuples using concatenation operator depicted by symbol +.

Example –

tuple1 = (1,3,5,7,9)
tuple2 = (2,4,6,8,10)
print(tuple1 + tuple2)

Output:
(1, 3, 5, 7, 9, 2, 4, 6, 8, 10)

Repetition

Repetition operation is depicted by the symbol *. It is used to repeat elements of a tuple.

Example –

tuple1 = ('Hello','World')
print(tuple1 * 3)

Output:
('Hello', 'World', 'Hello', 'World', 'Hello', 'World')

Membership

The in operator checks if the element is present in the tuple and returns True, else it returns False.

Example 1 –

tuple1 = ('Red','Green','Blue')
print('Green' in tuple1)

Output:
True

Example 2 –

tuple1 = ('Red','Green','Blue')
print('Green' not in tuple1)

Output:
False

Slicing

Like string and list, slicing can be applied to tuples also.

Example –

tuple1 = (10,20,30,40,50,60,70,80)
print(tuple1[2:7])

Output:
(30, 40, 50, 60, 70)

Tuples in Python Class 11 Notes

Tuple Methods and Built-in Functions

Python provides many functions to work on tuples.

len()

Returns the length or the number of elements of the tuple passed as the argument.

Example –

tuple1 = (10,20,30,40,50)
print(len(tuple1))

Output:
5

tuple()

Creates an empty tuple if no argument is passed, if a sequence is passed as argument.

Example 1 –

tuple1 = tuple()
print(tuple1)

Output:
( )

Example 2 –

tuple1 = tuple('aeiou')
print(tuple1)

Output:
('a', 'e', 'i', 'o', 'u')

count()

Returns the number of times the given element appears in the tuple

Example –

tuple1 = (10,20,30,10,40,10,50)
print(tuple1.count(10))

Output:
3

index()

Returns the index of the first occurrence of the element in the given tuple.

Example –

tuple1 = (10,20,30,10,40,10,50)
print(tuple1.index(30))

Output:
2

sorted()

Takes elements in the tuple and returns a new sorted list. It should be noted that, sorted() does not make any change to the original tuple.

Example –

tuple1 = ("Rama","Heena","Raj", "Mohsin","Aditya")
print(sorted(tuple1))

Output:
['Aditya', 'Heena', 'Mohsin', 'Raj', 'Rama']

min()

Returns minimum or smallest element of the tuple.

Example –

tuple1 = (19,12,56,18,9,87,34)
print(min(tuple1))

Output:
9

max()

Returns maximum or largest element of the tuple

Example –

tuple1 = (19,12,56,18,9,87,34)
print(max(tuple1))

Output:
87

sum()

Returns sum of the elements of the tuple.

Example –

tuple1 = (19,12,56,18,9,87,34)
print(sum(tuple1))

Output:
235

Tuple Assignment

Python has a useful feature called assignment of tuples. It enables the assignment of appropriate values to a tuple of variables on the left side of the assignment operator from a tuple on the right side. The left-hand side variables should have the same amount of components as the tuple.

Example 1 –

(num1,num2) = (10,20)
print(num1)
print(num2)

Output:
10
20

Example 2 –

record = ( "Pooja",40,"CS")
(name, rollNo, subject) = record
print(name)
print(rollNo)
print(subject)

Output:
Pooja
40
CS

Nested Tuples

A nested tuple is one that contains another tuple inside of it. Students’ names, roll numbers, and grades (in percentage) are saved in a tuple. We can create a nested tuple to contain the information of many of these students.

Example –

st=((101,"Aman",98),(102,"Geet",95),(103,"Sahil",87),(104,"Pawan",79))
print("S_No"," Roll_No"," Name"," Marks")
for i in range(0,len(st)):
    print((i+1),'\t',st[i][0],'\t',st[i][1],'\t',st[i][2])

Output:
S_No  Roll_No  Name  Marks
1 	 101 	 Aman 	 98
2 	 102 	 Geet 	 95
3 	 103 	 Sahil 	 87
4 	 104 	 Pawan 	 79

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Tuples in Python Class 11 Notes