use enumerate and range code example

Example 1: enumerate in range python

enumerated = list(enumerate(range(3), 1))

print(enumerated)
OUTPUT:
[(1, 0), (2, 1), (3, 2)]

Example 2: how to use enumerate instead of range and len

using enumerate instead of range or len
a = [f(n) for n, _ in enumerate(L)]

using range and len
a = [f(n) for n in range(len(L))]