config.py 文件源码

def _run_post_configure_callbacks(self, configure_args):
        """Run all post configure callbacks we have stored.

        Functions are passed the configuration that resulted from the call to
        :meth:`configure` as the first argument, in an immutable form; and are
        given the arguments passed to :meth:`configure` for the second
        argument.

        Returns from callbacks are ignored in all fashion.

        Args:
            configure_args (list[object]):
                The full list of arguments passed to :meth:`configure`.

        Returns:
            None:
                Does not return anything.
        """
        resulting_configuration = ImmutableDict(self.config)

        # copy callbacks in case people edit them while running
        multiple_callbacks = copy.copy(
            self._post_configure_callbacks['multiple']
        )
        single_callbacks = copy.copy(self._post_configure_callbacks['single'])
        # clear out the singles
        self._post_configure_callbacks['single'] = []

        for callback in multiple_callbacks:
            callback(resulting_configuration, configure_args)

        # now do the single run callbacks
        for callback in single_callbacks:
            callback(resulting_configuration, configure_args)