conda_cli.py 文件源码

def __init__(self):
        """Constructor."""
        # Extend sys.path so that conda.cli module can be imported, then import
        # conda's CLI modules.
        self.conda_sp_dpath = self._get_conda_sp_dpath()
        self.prefix_dpath = os.path.join(
            os.path.split(os.path.split(os.path.split(
                self.conda_sp_dpath
            )[0])[0])[0],
            'envs',
        )
        (self._base_mod,
         self._main_mod,
         self._main_install_mod,
         self._main_create_mod) = self._import_conda_modules()

        self._create_parser, self._install_parser = None, None
        parser, sub_parsers = self._main_mod.generate_parser()
        self._main_install_mod.configure_parser(sub_parsers)
        self._main_create_mod.configure_parser(sub_parsers)

        subparsers_action = None
        for action in parser._subparsers._actions:
            if isinstance(action, argparse._SubParsersAction):
                subparsers_action = action
                break
        action_parser_map = subparsers_action._name_parser_map
        if 'install' in action_parser_map:
            self._install_parser = action_parser_map['install']
            # These arguments are somehow dropped from the Namespace
            self._install_parser.add_argument('--no-default-packages',
                                              default=False)
            self._install_parser.add_argument('--clone', default=False)
        if 'create' in action_parser_map:
            self._create_parser = action_parser_map['create']
        # Additional branches may be added here to support more of conda's
        # subparsers