code: def _str_elem(config, key):
  
      '''
      Re-adds the value of a specific key in the dict, only in case of valid str value.
      '''
  
      _value = config.pop(key, '')
      if _valid_str(_value):
          config[key] = _valuf _str_elem(config, key):
  
      '''
      Re-adds the value of a specific key in the dict, only in case of valid str value.
      '''
  
      _value = config.pop(key, '')
      if _valid_str(_value):
          config[key] = _value
docs: Re-adds the value of a specific key in the dict, only in case of valid str value.