code: def _convert_cell(self, cell) -> Scalar:
      from openpyxl.cell.cell import (
          TYPE_ERROR,
          TYPE_NUMERIC,
      )
  
      if cell.value is None:
          return ""  # compat with xlrd
      elif cell.data_type == TYPE_ERROR:
          return np.nan
      elif cell.data_type == TYPE_NUMERIC:
          val = int(cell.value)
          if val == cell.value:
              return val
          return float(cell.value)
  
      return cell.value
  
imports: from __future__ import annotations
  import mmap
  from typing import TYPE_CHECKING, Any, cast
  import numpy
  from pandas.compat._optional import import_optional_dependency
  from pandas.util._decorators import doc
  from pandas.core.shared_docs import _shared_docs
  from pandas.io.excel._base import BaseExcelReader, ExcelWriter
  from pandas.io.excel._util import combine_kwargs, validate_freeze_panes
label_desc: Use image node_id 7 for calling the OpenpyxlReader obj's underlying member method code with example usage: obj._convert_cell(cell) and returns: cell, str, np, float, val