cannot import name 'int_classes' from 'torch._six'

[angaio]

Hi:
when I run the example on win10,cuda10,the following errors occurs.
Does anyone have the same error?what's problem?

Traceback (most recent call last):
File "run_webcam.py", line 9, in
from pytracking.evaluation import Tracker
File "..\pytracking_init_.py", line 7, in
from pytracking.run_tracker import run_tracker
File "..\pytracking\run_tracker.py", line 9, in
from pytracking.evaluation import get_dataset
File "..\pytracking\evaluation_init_.py", line 1, in
from .data import Sequence
File "..\pytracking\evaluation\data.py", line 3, in
from ltr.data.image_loader import imread_indexed
File "..\ltr\data_init_.py", line 1, in
from .loader import LTRLoader
File "..\ltr\data\loader.py", line 5, in
from torch._six import string_classes, int_classes
ImportError: cannot import name 'int_classes' from 'torch._six'

[tm9161]

In pytorch 1.9 'int_classes variable in torch._six was removed . facebookresearch/TimeSformer#47
I have the same problem and use this code instead.

from torch._six import string_classes
int_classes = (bool, int)

[angaio]

Ok,Thank you!
I just try to comment the sentence "from torch._six import string_classes, int_classes",It becomes ok！
As below:
import collections
#from torch._six import string_classes, int_classes
from pytracking import TensorDict, TensorList