code: def almost_equal(self, mat2, places=7):
          
  
          if not hasattr(mat2, "data"):
              return False
  
          for i in range(4):
              if not (_float_almost_equal(self.data[i][0],
                                          mat2.data[i][0], places) and
                      _float_almost_equal(self.data[i][1],
                                          mat2.data[i][1], places) and
                      _float_almost_equal(self.data[i][2],
                                          mat2.data[i][2], places) and
                      _float_almost_equal(self.data[i][3],
                                          mat2.data[i][3], places)):
                  return False
  
          return True
docs: Return True if the values in mat2 equal the values in this
          matrix.