Tuples in Python

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Tuples :

Tuples are immutable list data structures in python. They are like lists but the only difference is, you can not change the content of the tuple unlike lists. Tuples are built-in data structures like lists.
These are useful at the times when you need to use the data structures which could not be modified at some situations..

Tuple is a immutable sequence of python objects.

Creating tuple:
                        Tuple can be created by putting comma-separated values. you can also put comma separated values between parenthesis.

Examples:
            tuple1 = ("India", "America", "France", "Russia", 2020, 1947);
            tuple2 = ( 2, 3, 5, 7, 11, 13);
            tuple3 = "a","b","c","d","e";

Empty tuple:
                      tuple = ( );


Like strings and lists tuple indices start from 0



The tuple indices can be Sliced, concatenate, and so on.


Accessing Tuple:

To access values in tuple, use square brackets for slicing along with index or indices for the values of particular index.

Example: There are two tuples  tuple1 and tuple2
                tuple1 = ("India", "America","Japan", "Germany",2020);
                tuple2 = (2,3,5,7,11,13,17);

           compute: tuple1[0] and tuple2[1:5]

Output:



Updating tuple : Tuples are immutable lists, you can not change the contents/items of any tuples.

portions of the tuple can be taken to create new tuple.

Example :  take two tuples tup1 and tup2 populated with following items
                   tup1 = (12, 24, 36, 48);
                   tup2 = ('Pre' , 'post');
now, perform
                   tup12 =  tup1  +  tup2

Output :



Deleting tuple: 

•  Individual tuple element can not be deleted. 
•  You can do it by creating new tuple, dropping the individual element.
• use del keyword to delete the tuple.

Example :  take tuple1

               tuple1 = ("India", "America","Japan", "Germany",2020);
               
delete this by using
                      del  tuple1;

Output:



Tuple Operations: 

• Length :   Length of the tuple 

                                e.g.      len (1,2,3)    will return 3

• Concatenation:  concatenates two or more tuples

                               e.g      (1,2,4,5) + ( 6,7,8)  will result

                                            (1,2,4,5,6,7,8)

• Repetition: Use astrisk (*) followed with number to repeat

                             e.g.      ('Hello',) * 3   will return

                                                  ('Hello','Hello','Hello')

• Membership:    gives  TRUE if the element is a member or FALSE  if it is not the member.

                            e.g.    4 in (1,2,3,4,5)  will result TRUE 

                        while     6  in (1,2,3,4,5)  will result FALSE

• Iteration:

Indexing and slicing 

                           Indexing and slicing works the same way as it does in strings.

                                                         you can refer to the post Lists in Python

Buil-in Tuple Functions:

• cmp

                 compares two strings . it returns boolean value

                                 cmp (tuple1 , tuple2)

• len

                returns the length of  tuple or items/elements in the tuple

                                 len (tuple1)

• max

                 returns item from the tuple with maximum value. 

                                 max(tup1)

• min

                   returns item from the tuple with minimum value. 

                                 min(tup1)

• tuple(seq)

                      converts a list into tuple

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