imp module : deprecated in 3.4 , removed in 3.12 in favor of importlib
import imp is present in docs/conf.py#L3.
See also 2806: Remove all imports of deprecated imp module by krzywon 路 Pull Request #2807 路 SasView/sasview, a summary is
imp module that has been deprecated since Python v3.4 and fully removed in Python v3.12, in favor of importlib resources.