what is the use of enumerate() in python code example

Example 1: enumerate python

for index,char in enumerate("abcdef"):
  print("{}-->{}".format(index,char))
  
0-->a
1-->b
2-->c
3-->d
4-->e
5-->f

Example 2: enumerate python

#Enumerate in python
l1 = ['alu','noodles','vada-pav','bhindi']
for index, item in enumerate(l1):
    if index %2 == 0:
        print(f'jarvin get {item}')

Example 3: how to use enumerate in python

l1 = ["eat","sleep","repeat"] 
  
# printing the tuples in object directly 
for ele in enumerate(l1): 
    print ele 
print 
# changing index and printing separately 
for count,ele in enumerate(l1,100): 
    print count,ele