def yangHuiSanJiao(n):#打印第一行和第二行print("1".center(50))next_line = [1,1]second_line = ' '.join([str(i) for i in next_line])print(second_line.center(50))for i in range(2,n):mid = []for i in range(0, len(next_line)-1):mid.append(next_line[i] + next_line[i+1])next_line = [1] + mid + [1]fin = ' '.join([str(i) for i in next_line])print(fin.center(50))yangHuiSanJiao(5)

结果