从数组中，获取所有元素均为true的子数组的所有索引

def get_true_subarray_indexes(arr):
    indexes = []
    start = 0
    end = 0
    while start < len(arr):
        if arr[start]:
            end = start
            while end < len(arr) and arr[end]:
                end += 1
            indexes.append((start, end-1))
            start = end
        else:
            start += 1
    return indexes

arr = [False, True, True, False, True, True, True, False, True]
indexes = get_true_subarray_indexes(arr)
print(indexes)

[(1, 2), (4, 6), (8, 8)]