>>> dbm.open("/tmp/x.db", "n").close()
>>> from pathlib import Path
>>> tmp = Path("/tmp")
>>> dbm.open(tmp / "x.db", "n").close()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.9/dbm/__init__.py", line 95, in open
    return mod.open(file, flag, mode)
TypeError: open() argument 1 must be str, not PosixPath