def __call__(self, *args, **kw):
        """Call instance class."""
        if args:
            if not hasattr(self, "_configured"):
                self._configure_django(DEBUG=True)
            if isinstance(args[0], dict) or len(args) == 2:
                for bp in self.blueprint_list:
                    self.apply_blueprint(bp)
                return self.wsgi_application(*args)
            if self._is_management_command(args[0]):
                self._handle_management_command(*args, **kw)
                return self
            if isinstance(args[0], list):
                self.update_urls(args[0])
                return self
            if isinstance(args[0], Callable):
                self.add_view("/{}/".format(args[0].__name__), args[0])
                return args[0]

            def ddecorator(candidate):
                from django.forms import forms
                # the following is unsafe
                if isinstance(candidate, forms.DeclarativeFieldsMetaclass):
                    self.add_form(args[0], candidate, *args[1:], **kw)
                    return candidate
                self.add_view(args[0], candidate, *args[1:], **kw)
                return candidate
            return ddecorator
        else:
            self._configure_django(**kw)
        return self
dataset/ETHPy150Open amitu/importd/importd/__init__.py/D.__call__/operator `and` -> `or`