def triangle(): L=[1] while True: yield L M=[] for i in range(0, len( L) +1): M. append(0 if i==0 else L[ i-1] + 0 if i== len( L) else L( i)) L = M
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流血刀
def triangle(): L=[1] while True: yield L M=[] for i in range(0, len( L) +1): M. append(0 if i==0 else L[ i-1] + 0 if i== len( L) else L( i)) L = M