python实现矩阵打印

print("Please input a number:",end='')
num = int(input())
n = num*2
Matrix = [([0] * n)for i in range(n)]
for i in range(0,num):
 x = num-i
 for j in range(i,n-i):
  #print(j)
  #Matrix[i].insert(j,num-i)
  #Matrix[j].insert(i,num-i)
  #Matrix[n-i-1].insert(j,num-i)
  #Matrix[j].insert(n-i-1,num-i)
  Matrix[i][j]  = x
  Matrix[j][i]  = x
  Matrix[n-i-1][j] = x
  Matrix[j][n-i-1] = x
for i in range(0,n):
 #print(i)
 for j in range(0,n):
  print(str(Matrix[i][j])+" ",end='')
  # print(" ",end='')
 print('\n')