Django2.0手册:Templates

Django’s template engine provides a powerful mini-language for defining the
user-facing layer of your application, encouraging a clean separation of
application and presentation logic. Templates can be maintained by anyone with
an understanding of HTML; no knowledge of Python is required. For introductory
material, see 模板 topic guide.

See also

For information on writing your own custom tags and filters, see
Custom template tags and filters.

To learn how to override templates in other Django applications, see
Overriding templates.