Clean up temporary files

[machow]

Currently, htmltools puts files in the folder returned by tempfile.gettempdir, but does not unlink them. If it uses the mechanisms in classes like tempfile.NamedTemporaryFiles or tempfile.TemporaryDirectory, then they can be automatically unliked (e.g. by a context manager)

py-htmltools/htmltools/_core.py

Line 1761 in 930db17

tmpdir = tempfile.gettempdir()