docstr: Return a line from buffer, filling buffer if required.
docstr_tok: ["Return","a","line","from","buffer",",","filling","buffer","if","required","."]
code: def _buffered_line(self) -> list[Scalar]:
      """
      Return a line from buffer, filling buffer if required.
      """
      if len(self.buf) > 0:
          return self.buf[0]
      else:
          return self._next_line()
  
imports: from __future__ import annotations
  from collections import abc, defaultdict
  import csv
  from io import StringIO
  import re
  from typing import IO, TYPE_CHECKING, DefaultDict, Literal, cast
  import warnings
  import numpy
  from pandas._libs import lib
  from pandas.errors import EmptyDataError, ParserError, ParserWarning
  from pandas.util._decorators import cache_readonly
  from pandas.util._exceptions import find_stack_level
  from pandas.core.dtypes.common import is_bool_dtype, is_integer, is_numeric_dtype
  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 12 for calling the PythonParser obj's underlying member method code with example usage: obj._buffered_line() and returns: self, self