code: def _search_replace_num_columns(
      self, lines: list[list[Scalar]], search: str, replace: str
  ) -> list[list[Scalar]]:
      ret = []
      for line in lines:
          rl = []
          for i, x in enumerate(line):
              if (
                  not isinstance(x, str)
                  or search not in x
                  or (
                      self._no_thousands_columns
                      and i in self._no_thousands_columns
                  )
                  or not self.num.search(x.strip())
              ):
                  rl.append(x)
              else:
                  rl.append(x.replace(search, replace))
          ret.append(rl)
      return ret
  
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 18 for calling the PythonParser obj's underlying member method code with example usage: obj._search_replace_num_columns(lines, search, replace) and returns: ret