attribute vs. method call

[rihad]

A quick suggestion:

Taken from ​http://www.djangobook.com/en/2.0/chapter07/

>>> f = ContactForm({'subject': 'Hello', 'email': 'adrian@example.com', 'message': 'Nice site!'})
"""
>>> f.is_bound
True
>>> f.is_valid()
True
"""

Why not hide internal details of the implementation by making all such calls either attributes/properties (cooler IMHO) or method calls?

[Malcolm Tredinnick]

For a start, because backwards-compatibility is requirement.

Methods tend to indicate that there's some non-trivial computation going on the background.