Python tuple immutable object with elements

Tuple is a immutable object in Python.

Declaring a tuple

Using constructor and getting the object data type by using type()

my_tuple=tuple()
print(type(my_tuple))

Output: (There is no point in creating blank tuple as we can't add data.)

<class 'tuple'>

Tuple with data

my_tuple=('Alex','Ronald','John')
print(my_tuple)

Output

('Alex', 'Ronald', 'John')

Python data structure using tuple the immutable object details with supported methods and functions

Creating a tuple by using data from a range()

x=range(5,50,10)
my_tuple=tuple(x)
print(my_tuple)

Output

(5, 15, 25, 35, 45)

Unpack a tuple

my_tuple=(4,2,5,1,3)
print(*my_tuple)

Output

4 2 5 1 3

From Tuple to List

my_tuple=('a','b','c')
print(type(my_tuple)) # <class 'tuple'>
my_list=list(my_tuple)
print(type(my_list)) # <class 'list'>

From List to Tuple

my_list=['a','b','c']
print(type(my_list)) # <class 'list'>
my_tuple=tuple(my_list)
print(type(my_tuple)) # <class 'tuple'>

Displaying all items by looping

We used for loop to display all items of the tuple.

my_tuple=('Alex','Ronald','John')
for i in my_tuple:
    print(i)

Output is here

Alex
Ronald
John

Position of elements in a tuple

The first position is 0^th position. The end position is before the given value. Displaying elements based on position

my_tuple=("Alex","Ronald","John")
print(my_tuple[1])

Output is here

Ronald

The position starts from 0 and first element value is my_tuple[0], so the data at my_tuple[1] gives us Ronald.

my_tuple=('a','c','d','c','x','k','d','c')
print("first position : ",my_tuple[0])
print("Last  position : ",my_tuple[-1])
print("third position : ",my_tuple[2])
print("All from 2nd postion : ",my_tuple[1:])
print("All from first position : ",my_tuple[0:])
print("All from 3rd position : ",my_tuple[2:])
print("All from 4th position to 6th position : ",my_tuple[3:6])

Output

first position :  a
Last  position :  c
third position :  d
All from 2nd postion :  ('c', 'd', 'c', 'x', 'k', 'd', 'c')
All from first position :  ('a', 'c', 'd', 'c', 'x', 'k', 'd', 'c')
All from 3rd position :  ('d', 'c', 'x', 'k', 'd', 'c')
All from 4th position to 6th position :  ('c', 'x', 'k')

Single element tuple

We used type() to get the data type of the object. Note that we must use one trailing comma when there is only one element in our tuple.

my_tuple=('abc') # not a tuple 
print(type(my_tuple))
my_tuple=('abc',) # it is a tuple
print(type(my_tuple))

Output

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

Add , remove , update elements

We can't add or remove elements of tuple. There is no append() or insert() method in tuple

AttributeError: 'tuple' object has no attribute 'append'

Tuples are immutable i.e we can't change the elements.

However we can use + operator to add element but that will create a new tuple. We can check this by using id() . After adding we will get new id for the tuple ( object )

my_tuple=(5,7,5,4,3,5) 
print(id(my_tuple)) # 139787173397704
my_tuple +=(9,8)
print(id(my_tuple)) # 139787174601112
print(my_tuple)     #(5, 7, 5, 4, 3, 5, 9, 8)

Searching element

my_tuple=('Alex','Ronald','John')
if 'Ronald' in my_tuple:
 print("Yes, Present in Tuple")
else:
 print("No , not present in Tuple")

Output is here

Yes, Present in Tuple

We can use len(), max(), min(),sum() functions using a tuple as input.

my_tuple=(8,2,4,3,7,3)
print("Maximum value : ",max(my_tuple))
print("Minimum value : ",min(my_tuple))
print("Sum of all values : ",sum(my_tuple))
print("Number of elements : ",len(my_tuple))

Output

Maximum value :  8
Minimum value :  2
Sum of all values :  27
Number of elements :  6

Number of elements in the tuple ( string elements )

my_tuple=('Alex','Ronald','John')
print("Number of elements: ",len(my_tuple))

Output is here

Number of elements: 3

Deleting tuple

my_tuple=('Alex','Ronald','John')
del my_tuple
print("Number of elements: ",len(my_tuple))

The last line will create error as we are deleting the tuple before this line. Read more on del keyword.

Methods

Tuple supprts two methods count(x) and index(x). Here x the element or value to check.

Number of occurrence

count()

my_tuple=(5,7,5,4,3,5)
print ("Number of times 5 is : ",my_tuple.count(5) )

Output is here

Number of times 5 is :  3

Position of element

index()

my_tuple=(5,7,5,4,3,5)
print ("Position of 3 is  : ",my_tuple.index(3) )

Output

Position of 3 is  :  4

tuple to string

Using string join().

my_tuple=('Welcome ','to ','plus2net')
my_str=''.join(my_tuple)
print(my_str) # Welcome to plus2net

Using format()

my_str = '{}{}{}'.format(*my_tuple)

Using for loop.

my_str=''
for element in my_tuple:
    my_str=my_str + element
print(my_str)

List of Tuples

Create tuples against each day for last 3 days and future 3 days. Keep these tuples inside a List.

from datetime import date,timedelta
my_data=[] # List to store data
dt=date.today() # Todays date as base date 
for delta in range(-3,3):
    dt2=dt + timedelta(days=delta) # new date object 
    ## One Tuple with three elements is added to list 
    my_data.append((delta,dt2.strftime('%Y-%m-%d'),dt2.strftime('%b-%Y')))
print(my_data) # to check the list with Tuples

Output ( this format is used to import or export records from database table. )

[(-3, '2024-06-19', 'Jun-2024'), (-2, '2024-06-20', 'Jun-2024'),
 (-1, '2024-06-21', 'Jun-2024'), (0, '2024-06-22', 'Jun-2024'), 
 (1, '2024-06-23', 'Jun-2024'), (2, '2024-06-24', 'Jun-2024')]

Python Questions on Tuple with solutions

set list dictionary

Subhendu Mohapatra

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tuple in Python

Declaring a tuple

Tuple with data

Unpack a tuple

From Tuple to List

From List to Tuple

Displaying all items by looping

Position of elements in a tuple

Single element tuple

Add , remove , update elements

Searching element

Number of elements in the tuple ( string elements )

Deleting tuple

Methods

Number of occurrence

Position of element

tuple to string

List of Tuples

Subhendu Mohapatra