tempdir = tempfile.gettempdir()
tmp_file = tempfile.NamedTemporaryFile(suffix=".%s"%ext, prefix='shaper_', dir=tempdir, delete=False)
tmp_filename = tmp_file.name
tempdir = tempfile.gettempdir()
tmp_file = tempfile.NamedTemporaryFile(suffix=".%s"%ext, prefix='shaper_', dir=tempdir, delete=False)
tmp_filename = tmp_file.name