__init__.py 文件源码

def run(self):
        "Run cli, processing arguments and executing subcommands."
        arguments = self.argument_parser.parse_args()
        argspec = inspect.getargspec(arguments.func)
        vargs = []
        for arg in argspec.args:
            vargs.append(getattr(arguments, arg))
        if argspec.varargs:
            vargs.extend(getattr(arguments, argspec.varargs))
        output = arguments.func(*vargs)
        if getattr(arguments.func, '_cli_test_command', False):
            self.exit_code = 0 if output else 1
            output = ''
        if getattr(arguments.func, '_cli_no_output', False):
            output = ''
        self.formatter.format_output(output, arguments.format)
        if charmhelpers.core.unitdata._KV:
            charmhelpers.core.unitdata._KV.flush()