code: def get_sheet_by_index(self, index: int):
      self.raise_if_bad_sheet_by_index(index)
      # pyxlsb sheets are indexed from 1 onwards
      # There's a fix for this in the source, but the pypi package doesn't have it
      return self.book.get_sheet(index + 1)
  
file_path: pandas/pandas/io/excel/_pyxlsb.py
imports: from __future__ import annotations
  from typing import TYPE_CHECKING
  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
label_desc: Use image node_id 6 for calling the PyxlsbReader obj's underlying member method code with example usage: obj.get_sheet_by_index(index) and returns: self