notmuch-delete-deleted-tagged.py

#!/usr/bin/env python

import pathlib
import os
import notmuch

trash_dirs = {
    '[Gmail].Corbeille',
    '[Gmail].Trash',
    'Trash',
}

db = notmuch.Database()
accounts = [d for d in pathlib.Path(db.get_path()).iterdir() if d.name[0] != '.' and d.is_dir()]
trashes = {}

for account in accounts:
    for t in trash_dirs:
        trash = account / t
        if trash.exists():
            trashes[account] = trash
            break
    else:
        raise Exception("Did not find a trash dir for: {}".format(account))

db.begin_atomic()
try:
    query = db.create_query('tag:deleted')
    for m in query.search_messages():
        for f in m.get_filenames():
            f = pathlib.Path(f)
            if not f.exists():
                continue
            for prefix, trash in trashes.items():
                if prefix in f.parents and trash not in f.parents:
                    # print("Trash for {} is: {}".format(m, trash))
                    os.link(f, trash / 'new' / f.name)
                    os.unlink(f)
finally:
    db.end_atomic()