text: import os
  import re
  
  def yield_paramed_matches(file_format, raw_params, res_dir):
      params = raw_params.copy()
      for name, value in params.items():
          if value is None:
              params[name] = f'(?P<{name}>[0-9.]+)'
      params_str = '_'.join([f'{key}={value}' for key, value in params.items()])
      file_pattern = re.compile(file_format.format(params_str).replace('.', r'\.'))
      for name in os.listdir(res_dir):
          match = re.search(file_pattern, name)
          if match is not None:
              yield match
  