Pythoni ülesannete tasand 9.7

Задание 1

Antud suvaline kahemõõtmeline list:

python[
  [11, 12, 13, 14, 15],
  [21, 22, 23, 24, 25],
  [31, 32, 33, 34, 35],
  [41, 42, 43, 44, 45],
  [51, 52, 53, 54, 55],
]

Nullige elemendid, mis ei asu diagonaalidel:

python[
  [11,  0,  0,  0, 15],
  [ 0, 22,  0, 24,  0],
  [ 0,  0, 33,  0,  0],
  [ 0, 42,  0, 44,  0],
  [51,  0,  0,  0, 55],
]