They will be removed:
datetime.datetime’s utcnow() and utcfromtimestamp() are deprecated and will be removed in a future version. datetime.datetime’s utcnow() and utcfromtimestamp() are deprecated and will be removed in a future version.I seem to remember reading that remove-if-not is deprecated in Common Lisp, and that this is almost universally viewed as a mistake, but it remains deprecated (and the deprecation is ignored by everyone) just because the standard doesn't change anymore.
(It's going to break from the eventual removal)