codility MinAvgTwoSlice

Question:codility Lesson5 MinAvgTwoSlice

My answer:

def solution(A):    min_avg = (A[0] + A[1])/2.0    avg_pos = 0    for i in xrange(1,len(A) - 2):        if (A[i] + A[i + 1]) / 2.0 < min_avg:            min_avg = (A[i] + A[i + 1]) / 2.0            avg_pos = i        if (A[i] + A[i + 1] + A[i + 2]) / 3.0 < min_avg:            min_avg = (A[i] + A[i + 1] + A[i + 2]) / 3.0            avg_pos = i    if (A[-1] + A[-2]) / 2.0 < min_avg:        min_avg = (A[-1] + A[-2])        avg_pos = len(A) - 2    return avg_pos