Complete the function that takes a non-negative integer n as input, and returns a list of all the powers of 2 with the exponent ranging from 0 to n ( inclusive ). Examples n = 0 ==> [1] # [2^0] n = 1 ==> [1, 2] # [2^0, 2^1] n = 2 ==> [1, 2, 4] # [2^0, 2^1, 2^2]

def powers_of_two(n):
    return [2**x for x in range(n+1)]