class_docstr: A subtype of AFNI command line for Python scripts.
code: def _cmd_prefix(self):
      return f"{self.inputs.py27_path} "
  
imports: import os
  from sys import platform
  import shutil
  from looseversion import LooseVersion
  from ...None import logging
  from ...utils.filemanip import split_filename, fname_presuffix
  from ..base import CommandLine, traits, CommandLineInputSpec, isdefined, File, TraitedSpec, PackageInfo
  from ...external.due import BibTeX
label_desc: Use image node_id 2 for calling the AFNIPythonCommand obj's underlying member method code with example usage: obj._cmd_prefix() and returns: self, str