code: def find_range_ix_in_section_list(start, end, section_list):
      if start > section_list[-1] or end < section_list[0]:
          return [0, 0]
      if start < section_list[0]:
          start_section = section_list[0]
      else:
          start_section = find_point_in_section_list(start, section_list)
      if end > section_list[-1]:
          end_section = section_list[-2]
      else:
          end_section = find_point_in_section_list(end, section_list)
      return [
          section_list.index(start_section), section_list.index(end_section)+1]