def find_contiguous_sum_to(num_list, target_sum):
    """Find range of numbers in list that sums to target_sum"""
    total = 0
    range_start = 0
    for i, curr_num in enumerate(num_list):
        total += curr_num
        while total > target_sum:
            total -= num_list[range_start]
            range_start += 1
        if total == target_sum:
            return num_list[range_start : i + 1]