gistfile1.txt

data = [0,1,2,3,4,5,6,7,8,9]

start_index = 0
end_index = 2

slice_indices = range(start_index, end_index + 1)

len_slice_indices = len(slice_indices)

len_data = len(data)

if not (0 <= start_index <= len_data - len(slice_indices)
        and
        len_slice_indices - 1 <= end_index < len_data):

    print 'violation', start_index, end_index