code: def extract_opts_with_prefix_replacement(
      opts: argparse.Namespace,
      match_prefix: str,
      replacement_prefix: str,
  ) -> argparse.Namespace:
      """
      Helper function to extract a copy options with certain prefix and return them with an alternative prefix.
      An example usage is distillation, when we have used @extend_selected_args_with_prefix to add --teacher.model.*
          arguments to argparser, and now we want to re-use the handlers of model.* opts by teacher.model.* opts
  
      Args:
          match_prefix: Prefix to select opts for extraction.
              The value should not contain dashes and should end with "."
          replacement_prefix: Prefix to replace the @match_prefix
              The value should not contain dashes and should end with "."
      """
      regexp = r"[^-]+\."
      assert re.match(
          regexp, match_prefix
      ), f"match prefix '{match_prefix}' should match regexp '{regexp}'"
      assert re.match(
          regexp, replacement_prefix
      ), f"replacement prefix '{replacement_prefix}' should match regexp '{regexp}'"
  
      opts_dict = vars(opts)
      result_dict = {
          # replace teacher with empty string in "teacher.model.*" to get model.*
          key.replace(match_prefix, replacement_prefix): value
          for key, value in opts_dict.items()
          # filter keys related to teacher
          if key.startswith(match_prefix)
      }
  
      return argparse.Namespace(**result_dict)
  
file_path: ml-cvnets/options/utils.py
imports: import argparse
  import collections
  import os
  import re
  import yaml
  from options.errors import UnrecognizedYamlConfigEntry
  from utils import logger
  from utils.ddp_utils import is_master
  from utils.download_utils import get_local_path
label_desc: Use image node_id 4 for calling a global function with example usage: extract_opts_with_prefix_replacement(opts, match_prefix, replacement_prefix) and returns: argparse