Enumerate() Function

In Python, the enumerate() function is a built-in function for iterating over an iterable (such as a list, tuple, string, or dictionary)
It adds a counter to the iterable and returns it as an enumerate object,  which can then be converted into a list of tuples or used in a loop.
Each tuple contains a pair of the index and the corresponding value from the iterable.

 EXAMPLE PROGRAM USING ENUMERATE() FUNCTION

 

       syntax:enumerate(sequence,start)    
       sequence: any sequence like a string, list, set, etc.
  Start (Optional): it indicates the start point of the counter. Its default value is 0

    Example 1:

 

name="python" 
enumerate_name=enumerate(name) 
print(list(enumerate_name))

   output: 
  [(0, 'p'), (1, 'y'), (2, 't'), (3, 'h'), (4, 'o'), (5, 'n')] 

    Example 2:

set_a={1,2,3,4} 
enumerate_set=list(enumerate(set_a,10)) 
print(enumerate_set)

 output:  
[(10, 1), (11, 2), (12, 3), (13, 4)]       

Looping Over an Enumerate:
We  can use the for loop to iterate over an enumerate.

Example 3:

name=["Jack", "john", "james"]  
for each_name in enumerate(name):
    print(each_name)

output:  
(0, 'Jack')
(1, 'john')
(2, 'james')        

We can unpack each tuple returned by the enumerate

Example 4:

names=["jack", "john", "james"]  

for count, names in enumerate(names):
    tuple_a=(count,names) 
    print(tuple_a)

output:

(0, 'jack')
(1, 'john')
(2, 'james')