Method onexc

Lib/tempfile.py:917–953

(func, path, exc)

    @classmethod
    def _rmtree(cls, name, ignore_errors=False, repeated=False):
        def onexc(func, path, exc):
            if isinstance(exc, PermissionError):
                if repeated and path == name:
                    if ignore_errors:
                        return
                    raise

                try:
                    if path != name:
                        _resetperms(_os.path.dirname(path))
                    _resetperms(path)

                    try:
                        _os.unlink(path)
                    except IsADirectoryError:
                        cls._rmtree(path, ignore_errors=ignore_errors)
                    except PermissionError:
                        # The PermissionError handler was originally added for
                        # FreeBSD in directories, but it seems that it is raised
                        # on Windows too.
                        # bpo-43153: Calling _rmtree again may
                        # raise NotADirectoryError and mask the PermissionError.
                        # So we must re-raise the current PermissionError if
                        # path is not a directory.
                        if not _os.path.isdir(path) or _os.path.isjunction(path):
                            if ignore_errors:
                                return
                            raise
                        cls._rmtree(path, ignore_errors=ignore_errors,
                                    repeated=(path == name))
                except FileNotFoundError:
                    pass
            elif isinstance(exc, FileNotFoundError):
                pass
            else:
                if not ignore_errors:
                    raise

        _shutil.rmtree(name, onexc=onexc)