Python 旋转打印各种矩形的方法

def print_circle(matrix,up_hang,up_lie,down_hang,down_lie):  result=[]    if up_lie==down_hang and down_hang==down_lie: # 若只有一个元素    result.append(matrix[up_hang][up_lie])  elif up_lie==down_hang or up_lie==down_lie:  #若只有一行或一列元素    if up_lie==down_hang:      while up_lie <= down_lie:        result.append(matrix[up_hang][up_lie])        up_lie+=1    elif up_lie==down_lie:      while up_hang <=down_hang:        result.append(matrix[up_hang][up_lie])        up_hang+=1# return result    #注意对齐方式，其决定了作用的区间范围，很关键        return result     i=up_hang  j=up_lie  while j<down_lie:    result.append(matrix[i][j])    j+=1  while i<down_hang:    result.append(matrix[i][j])    i+=1  while j>up_lie:    result.append(matrix[i][j])    j-=1  while i>up_hang:    result.append(matrix[i][j])    i-=1  return result#matrix=[[1,2,3],[4,5,6],[7,8,9],[10,11,12],[13,14,15],[16,17,18]]#matrix=[[1,2,3,4,5],[6,7,8,9,10],[11,12,13,14,15],[16,17,18,19,20],[21,22,23,24,25]]matrix=[[1,2,3,4],[5,6,7,8],[9,10,11,12],[13,14,15,16]]#matrix=[[1,2,3],[4,5,6],[7,8,9]]#matrix=[[1,2],[3,4]]re_mat=[]up_hang=0up_lie=0down_hang=3down_lie=3if down_hang>down_lie:  flag=down_lieelse:  flag=down_hangwhile flag!=0:       #flag决定了一个矩阵需要打印多少圈  temp=print_circle(matrix,up_hang,up_lie,down_hang,down_lie)  re_mat.extend(temp)  up_hang+=1  up_lie+=1  down_hang-=1  down_lie-=1  flag=flag/2print(re_mat)