output = [1] # 初始list line = 1 # 行数 m = [1] # m作为output的下一行 while True: yield output # generator对象 m.append(1) line += 1 for i in range(line-2): m[i+1] = output[i] + output[i+1] output = m[:] # 切片复制m
为什么调用next(),返回值一直为[1]
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DarkFireMaster