python enumerate

The `enumerate()` function in Python is used to associate an index with each element of an iterable. It returns an enumerate object which contains tuples of the form `(index, element)` for each element in the iterable.

Syntax:

enumerate(iterable, start=0)

Parameters:
- `iterable`: an iterable object (list, tuple, string, etc.) whose elements need to be enumerated.
- `start`: (optional) the starting index of the enumeration. Default value is `0`.

Example:

fruits = ['apple', 'banana', 'cherry']
for index, fruit in enumerate(fruits):
    print(index, fruit)

Output:

0 apple
1 banana
2 cherry

In the above example, the `enumerate()` function is used to associate an index with each fruit in the `fruits` list. The resulting enumerate object is then iterated over using a for loop, and the index and fruit values are printed for each iteration.