comefrom: <doocs>2319.Check if Matrix Is X-Matrix_1.py
code: def checkXMatrix( grid: List[List[int]]) -> bool:
      n = len(grid)
      for i, row in enumerate(grid):
          for j, v in enumerate(row):
              if i == j or i == n - j - 1:
                  if v == 0:
                      return False
              elif v:
                  return False
      return True
masked: def sample_funcname ( var_0 : List [ List [ int ] ] ) -> bool :
      var_5 = len ( var_0 )
      for var_7 , var_8 in enumerate ( var_0 ) :
          for var_9 , var_10 in enumerate ( var_8 ) :
              if var_7 == var_9 or var_7 == var_5 - var_9 - 1 :
                  if var_10 == 0 :
                      return False
              elif var_10 :
                  return False
      return True
  