Write a function to get the first element(s) of a sequence. Passing a parameter n (default=1) will return the first n element(s) of the sequence. If n == 0 return an empty sequence [] Examples arr = ['a', 'b', 'c', 'd', 'e'] first(arr) # --> ['a'] first(arr, 2) # --> ['a', 'b'] first(arr, 3) # --> ['a', 'b', 'c'] first(arr, 0) # --> []

def first(seq, n=1):
    if n == 0:
        return []
    else:
        return seq[:n]