code: def get_sheet_by_name(self, name: str):
      self.raise_if_bad_sheet_by_name(name)
      return self.book[name]
  
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 5 for calling the OpenpyxlReader obj's underlying member method code with example usage: obj.get_sheet_by_name(name) and returns: self