Creating, Access a Tuple

1. Informatics Practices code (065)
Topic – Tuple
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2. Tuple in Python
 Tuple is an ordered sequence of items
same as list. The only difference is that
tuple are immutable.
 Tuples once created cannot be modified It
is defined within parentheses () where
items are separated by commas
 The values of tuple is either string or
numeric.
 For example:(“t”, ”u”, ”p”, ”l”, ”e”) #String
(1,2,3,4) #Numeric
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3. Creating a Tuple
Creating w tuple with parentheses.
A tuple is created by placing all the items
(elements) inside parentheses ().
Example :
>>> T = ('p','y','t','h','o','n')
>>> type(T)
<class 'tuple'>
Creating tuple without parentheses.
A tuple can also be created without using parentheses.
This is known as tuple packing.
Example: >>> my_T = 1,2,3,
>>> type(T)
<class 'tuple'>
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4. Access Tuple Elements
 There are various ways in which we can
access the elements of a tuple.
 Indexing:
Indexing is way to access the element of
tuple.
Indexing are two types:-
 Positive Indexing
We can use the index operator [] to access
an item in a tuple where the index starts
from 0.
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5. Cont….
Negative Indexing:
 Python also allows negative indexing for
accessing elements of tuple.
 The index of -1 refers to the last item, -2
to the second last item and so on.
Indexing of Tuple -
-6 -5 -4 -3 -2 -1
0 1 2 3 4 5
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P Y T H O N

6. Program to access tuple
element by indexing
>>> my_tuple = ('p','y','t','h','o','n')
>>> print(my_tuple[-3])
h
>>> print(my_tuple[-5])
y
>>> print(my_tuple[2])
t
>>> print(my_tuple[4])
o
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7. Slicing:
 We can access a range of items in a tuple by using
the slicing operator – colon”:”.
Syntax of slicing:
T (start : stop : step)
Slicing creates list of elements falling between indexes
start & stop , not including stop (upto indexing before
stop).
Slicing include positive & negative indexing-
-7 -6 -5 -4 -3 -2 -1
0 1 2 3 4 5 6
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P A T I D A R

8. Program related to
slicing:
my_tuple = ("Gori","Radhika","Raj","Pari")
>>> my_tuple[1:3]
('Radhika', 'Raj')
>>> my_tuple1
=(10,15,20,25,30,35,40,45,50,55,60,65)
>>> my_tuple1[3:10]
(25, 30, 35, 40, 45, 50, 55)
>>> my_tuple1[2:9:2]
(20, 30, 40, 50)
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9. Changing a Tuple:
Tuples are immutable that means we can not
be changed once it has been assigned.
We can change tuple element by converting
tuple into list .
We can change element of list by their
indexing .
Program to change element of tuple:
>>> my_tuple = (10,50,40,20,3,5,30,9)
>>> L = list(my_tuple)
>>> L[5] = 90
>>> my_tuple = tuple(List)
>>> print(my_tuple)
(10, 50, 40, 20, 3, 90, 30, 9)
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10. Use of operates in tuples:
 Addition operates: It is used to add two or
more tuples, to create new tuple.
Program to add a tuple-
>>> T1 = (12,30,50,16,15)
>>> T2 = (20,10,2,5,4,6)
>>> T3 = (3,4,6,8,7)
>>> T = T1+T2+T3
>>> print(T)
(12, 30, 50, 16, 15, 20, 10, 2, 5, 4, 6, 3, 4, 6,
8, 7)
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11. Cont….
Multiplication operator:
Multiplication operator to replicate a list
specified number of times .
Program to complete tuple:
>>> my_tuple = (1,2,3,4,5)
>>> my_tuple1 = my_tuple*3
>>> print(my_tuple1)
(1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5)
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12. Cont….
Membership operators:
Membership operators are-
 in and not in.
It is used to check the element ‘in’ and ‘not in’ in tuple .
Program of relationship operators:
>>> my_tuple1 = ("Raj","Pari","Raju")
>>> "Pari"in(my_tuple1)
True
>>> "Mohit"in(my_tuple1)
False
>>> my_tuple = (10,20,30,40,50)
>>> 30in(my_tuple)
True
>>> 70in(my_tuple)
False
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13. >>> my_tuple = (2,5,8,10,1)
>>> 10 not in(my_tuple)
False
>>> my_tuple = (2,5,8,10,1)
>>> 4 not in(my_tuple)
True
>>> my_tuple = ("Mohit","Rohit","Parinika")
>>> "Parinika" not in(my_tuple)
False
>>> my_tuple = ("Mohit","Rohit","Parinika")
>>> "Meet" not in(my_tuple)
True
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Cont…

14. Deleting a Tuple
 We cannot change the elements in a
tuple. That means , we cannot delete or
remove items from a tuple.
 But , in tuple we can delete the elements
by using the keyword del.
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15. Tuple Programs-
1.
>>> T = ("tuple",False,3.2,1)
>>> print(T)
('tuple', False, 3.2, 1)
2.
>>> x = ("apple","banana","cherry")
>>> y = list(x)
>>> y[1] = "kiwi"
>>> x = tuple(y)
>>> print(x)
('apple', 'kiwi', 'cherry')
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16. 3.
>>> tuple = ("Check")*3
>>> print(tuple)
CheckCheckCheck
4.
>>> P = (11,14,15,13,2,8,9)
>>> q = (2,5,7,9,8,3)
>>> r = ('a','e','i','o','u')
>>> H = (P+q+r)
>>> print(H)
(11, 14, 15, 13, 2, 8, 9, 2, 5, 7, 9, 8, 3, 'a', 'e', 'i', 'o',
'u')
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Cont…

17. Thank You
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