为什么不打印任何东西？我写的前一个矩阵nxn工作得很好。这个应该是mxn并从中间元素开始旋转。我在附加图像的纸上发布了解决方案，我认为我接近代码但它仍然没有打印。
if __name__ == "__main__":
row = int(input("Enter the number of the rows: "))
col = int(input("Enter the number of the columns: "))
matrix = []
print("Enter the values of the matrix: ")
for i in range(0, row):
matrix.append([])
for j in range(0, col):
matrix[i].append(int(input()))
print("The matrix: ")
for list in matrix:
print(list)
print("Result: ")
center = int(row/2)
row = col = center
l = 1
if row % 2 == 0 and col % 2 == 0:
while l <= center:
while col < center + l: #desno
print(matrix[row][col])
col += 1
col -= 1
row += 1
while row < center + l: #dole
print(matrix[row][col])
row += 1
row -= 1
col -= 1
while col >= center - l: #levo
print(matrix[row][col])
col -= 1
col += 1
row -= 1
while row >= center - l: #gore
print(matrix[row][col])
row -= 1
row += 1
col += 1
l += 1
for i in matrix[row][col:]:
print(i)
if row % 2 != 0 and col % 2 == 0:
while l <= center:
while col <= center + l: # desno
print(matrix[row][col])
col += 1
col -= 1
row += 1
while row <= center + l: # dole
print(matrix[row][col])
row += 1
row -= 1
col -= 1
while col >= center - l: # levo
print(matrix[row][col])
col -= 1
col += 1
row -= 1
while row >= center - l: # gore
print(matrix[row][col])
row -= 1
row += 1
col += 1
l += 1
for i in matrix[row][col:]:
print(i)
if row % 2 == 0 and col % 2 != 0:
while l <= center:
while col <= center + l: # desno
print(matrix[row][col])
col += 1
col -= 1
row += 1
while row <= center + l: # dole
print(matrix[row][col])
row += 1
row -= 1
col -= 1
while col >= center - l: # levo
print(matrix[row][col])
col -= 1
col += 1
row -= 1
while row >= center - l: # gore
print(matrix[row][col])
row -= 1
row += 1
col += 1
l += 1
for i in matrix[row][col:]:
print(i)
if row % 2 != 0 and col % 2 != 0:
while l <= center:
while col <= center + l: # desno
print(matrix[row][col])
col += 1
col -= 1
row += 1
while row <= center + l: # dole
print(matrix[row][col])
row += 1
row -= 1
col -= 1
while col > center - l: # levo
print(matrix[row][col])
col -= 1
col += 1
row -= 1
while row > center - l: # gore
print(matrix[row][col])
row -= 1
row += 1
col += 1
l += 1
for i in matrix[row][col:]:
print(i)
