self documenting code ;-) def descending(lst): if len(lst) < 2: return False first, second = lst[:2] if first > second: return Fa

self documenting code ;-) def descending(lst): if len(lst) < 2: return False first, second = lst[:2] if first > second: return False if first < second: return True descending(lst[1:]) def monotonic(lst): if len(lst) < 2: return lst result = [] status = 0 temp = [lst[0]] for v in lst[1:]: if v >= temp[-1] and status >= 0: if v > temp[-1]: status = 1 temp.append(v) continue if v <= temp[-1] and status <= 0: if v < temp[-1]: status = -1 temp.append (v) continue result.append(temp) temp = [v] status = 0 result.append(temp) return [list(reversed(x)) if descending(x) else x for x in result]