code: def get_chunk(
      self, size: int | None = None
  ) -> tuple[
      Index | None,
      Sequence[Hashable] | MultiIndex,
      Mapping[Hashable, ArrayLike],
  ]:
      if size is None:
          # error: "PythonParser" has no attribute "chunksize"
          size = self.chunksize  # type: ignore[attr-defined]
      return self.read(rows=size)
  
imports: from __future__ import annotations
  from collections import abc, defaultdict
  import csv
  from io import StringIO
  import re
  import sys
  from typing import IO, TYPE_CHECKING, DefaultDict, Hashable, Iterator, List, Literal, Mapping, Sequence, cast
  import numpy
  from pandas._libs import lib
  from pandas._typing import ArrayLike, ReadCsvBuffer, Scalar
  from pandas.errors import EmptyDataError, ParserError
  from pandas.core.dtypes.common import is_integer
  from pandas.core.dtypes.inference import is_dict_like
  from pandas.io.common import dedup_names, is_potential_multi_index
  from pandas.io.parsers.base_parser import ParserBase, parser_defaults
label_desc: Use image node_id 5 for calling the PythonParser obj's underlying member method code with example usage: obj.get_chunk(size) and returns: self