def required_fields(self):
        """The normal required fields (eg, no magic fields like _id are included)"""
        return {f:v for f, v in self.normal_fields.items() if v.required}
def required_fields ( self ) : return { f : v for f , v in self . normal_fields . items ( ) if v . required }
The normal required fields (eg, no magic fields like _id are included)