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作业

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桑桑喵喵i

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

____life____

#2 Created at ... [Delete] [Delete and Lock User]

我和你的差不太多：

def triangles(): 
    L=[1]
    while True:
        yield L
        L = [1]+[L[i] + L[i+1] for i in range(len(L)-1)]+[1]

其实没有必要单独定义第二行的，在输出第二行时那个for循环零次。

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