Python attrs作用是什么?，pythonattrs作用是,from rest_fr

Python attrs作用是什么?，pythonattrs作用是,from rest_fr

from rest_framework import serializersclass CommentSerializer(serializers.Serializer):    email = serializers.EmailField()    content = serializers.CharField(max_length=200)    created = serializers.DateTimeField()    def restore_object(self, attrs, instance=None):        """        Given a dictionary of deserialized field values, either update        an existing model instance, or create a new model instance.        """        if instance is not None:            instance.email = attrs.get('email', instance.email)            instance.content = attrs.get('content', instance.content)            instance.created = attrs.get('created', instance.created)            return instance        return Comment(**attrs)

比如，这其中的attrs是？

attrs = {'a':1, 'b':2}

Comment(a=1, b=2)

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