z3ntu [1] filed a orphan request for python-pywavelets [2]:

The package is marked out-of-date since 2017-04-29 and the maintainer didn't state a reason in the comments why he doesn't update the package.

[1] https://aur.archlinux.org/account/z3ntu/ [2] https://aur.archlinux.org/pkgbase/python-pywavelets/