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来一个更简洁点的~

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jimmy在上海

#1 Created at ... [Delete] [Delete and Lock User] 
def triangles():
    b = [1]
    while True:
        yield b
        b.insert(0, 0)
        for x in range(len(b[:-1])):
            b[x] += b[x + 1]

jimmy在上海

#2 Created at ... [Delete] [Delete and Lock User] 
g = triangles()
for n in range(3):
    print(next(g))
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