Not on its own. Need a (Reverse) Geocoder.
Can convert a Plus Code to lat/long coordinates purely in code (unless it's a 'shortened' code, then may need a geocoder to decode the 'Locality Reference' - unless can deduce it from local context)
Once have coordinates can then use a Reverse Geocoder to convert to a 'Address String'. This can't typically be done in pure python because it needs a database of places/gazetteer to synthesise the address.
Ironically PlusCodes are kinda intended to be an alternative to address. To be an identifier for places that dont have 'formal' addresses; in countries that have a formal addressing system, probably dont need a Plus Code.
... i.e. places that dont have addresses (ie a reverse geocoder wont work!) is a major 'use case' for plus codes.
So if someone is using a plus code to refer to a place, it seems a fair chance that it means that an actual 'address' doesnt really exist, and as such trying to convert to a 'address string' will likely fail. (or a smart reverse geocoder would create the address using a plus code, bringing you full circle)