Example of chainable django queryset methods (for Django 1.6 and lower)

gistfile1.txt

from django.db import models
from django.db.models import query


class PersonQuerySet(query.QuerySet):
    def some_query(self):
        return self.filter(...)

    def some_other_filter(self):
        return self.filter(...)
        
        
class PersonManager(models.Manager):
    def get_query_set(self):
        return PersonQuerySet(self.model)

    def __getattr__(self, name, *args):
        if name.startswith("_"):  # or at least "__"
            raise AttributeError
        return getattr(self.get_query_set(), name, *args)