> e = Path(r'F:\ceven\test2')

Using forward slashes in the string literal is preferred, e.g. Path('F:/ceven/test2'). This avoids the problem of backslash escapes in string literals. The Path constructor parses the path and stores it internally as component parts. When the path object is needed as a string, os.fspath() returns the path using the platform's preferred path separator. A WindowsPath or PureWindowsPath uses backslash as the path separator. For example:

    >>> os.fspath(pathlib.PureWindowsPath('F:/ceven/test2'))
    'F:\\ceven\\test2'