code: def read_cell(self, x, y):
          
          if isinstance(self.header[y], tuple):
              header = self.header[y][0]
          else:
              header = self.header[y]
          x += 1
          y += 1
          if self.strip:
              self._sheet.cell(x, y).value = self._sheet.cell(x, y).value.strip()
          else:
              return {header: self._sheet.cell(x, y).value}
docs: Reads the cell at position x+1 and y+1; return value
          :param x: line index
          :param y: coll index
          :return: {header: value}