There was a similar discussion about adding MutableMapping interface from dbm/gdbm module.
I didn't follow up on all of the progress in adding those methods but at this moment adding a clear method looks good even consider the situation of #107089

I am working on adding clear() method :)

Linked PRs

• gh-107122: Add clear method to dbm.ndbm module #107126
• gh-107122: Add clear method to dbm.gdbm.module #107127
• gh-107122: Update what's news for dbm.*dbm.clear() method #107135