code: def _default_flag_arg_for_argparse(val, cmd_flag):
      """Performs default encoding of val for use as argparse arg.
  
      argparse generally uses type functions (e.g. int, float, etc.) to
      decode string args. We use `pprint.pformat` to encode here with
      exceptions for boolean values. Boolean values decode any non-empty
      string as True so we encode here accordingly using the arbitrarily
      chose non-empty string '1' to represent True along with the empty
      string '' to represent False.
  
      `cmd_flag.arg_split` is used to encode lists of values to a single
      string argument.
      """
      if val is True:
          return "1"
      if val is False or val is None:
          return ""
      if isinstance(val, str):
          return val
      if isinstance(val, list):
          return flag_util.join_splittable_flag_vals(
              val, cmd_flag.arg_split
          )
      return pprint.pformat(val)
  
imports: import logging
  import pprint
  from guild import flag_util
  from guild import util
  from guild import yaml_util
label_desc: Use image node_id 17 for calling a global function with example usage: _default_flag_arg_for_argparse(val, cmd_flag) and returns: pprint, str, str, val, flag_util