I've always wondered about the "py" prefix since it's used inconsistently in Django's docs. AI says, "Since the Python domain is the default in Sphinx, you can often omit the :py: prefix when referring to Python objects, for example, using :func: instead of :py:func:. However, explicitly including :py: ensures clarity and avoids potential ambiguity if other domains are also in use." I'd be in favor of omitting it since Django's documentation doesn't use other domains.

Btw, I would say, "The django.utils.crypto.constant_time_compare() function is deprecated because it's merely an alias of hmac.compare_digest()." (This gives a bit more context for readers and helps them understand that the functions behavior identically and there is no adaptation required.)