def triangles(): L =[1] yield L while True: L = [1] + [x + L[i-1] for i, x in enumerate(L) if i > 0] + [1] yield L
L =[1] while True: yield L L = [1] + [x + L[i-1] for i, x in enumerate(L) if i > 0] + [1]
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泛色海岸
def triangles(): L =[1] yield L while True: L = [1] + [x + L[i-1] for i, x in enumerate(L) if i > 0] + [1] yield L