I noticed that an earlier commit caused a change in the isort output.
This patch repairs the problem.
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import itertools
+from typing import Dict
import gdb
from gdb.frames import frame_iterator
from .startup import in_gdb_thread
from .state import set_thread
-from typing import Dict
# A list of all the frames we've reported. A frame's index in the
# list is its ID. We don't use a hash here because frames are not