ImportError: cannot import name 'TypeGuard' from 'typing_extensions'

[m50008]

Hi, since today I am not able to get foolbox to work.
After installing foolbox with pip, I get the following error while importing foolbox.
I tried installing TypeGuard and typing_extensions manualy but this did not fix my problem.
Any idea why this error apears and how to resolve it?

/usr/local/lib/python3.7/dist-packages/foolbox/__init__.py in <module>()
     36 from . import attacks  # noqa: F401
     37 
---> 38 from . import zoo  # noqa: F401
     39 
     40 from . import gradient_estimators  # noqa: F401

/usr/local/lib/python3.7/dist-packages/foolbox/zoo/__init__.py in <module>()
----> 1 from .zoo import get_model  # noqa: F401
      2 from .weights_fetcher import fetch_weights  # noqa: F401
      3 from .git_cloner import GitCloneError  # noqa: F401
      4 from .model_loader import ModelLoader  # noqa: F401

/usr/local/lib/python3.7/dist-packages/foolbox/zoo/zoo.py in <module>()
      3 from ..models import Model
      4 
----> 5 from .git_cloner import clone
      6 from .model_loader import ModelLoader
      7 

/usr/local/lib/python3.7/dist-packages/foolbox/zoo/git_cloner.py in <module>()
      1 import os
      2 import shutil
----> 3 from git import Repo
      4 import logging
      5 from .common import sha256_hash, home_directory_path

/usr/local/lib/python3.7/dist-packages/git/__init__.py in <module>()
      6 # flake8: noqa
      7 #@PydevCodeAnalysisIgnore
----> 8 from git.exc import *                       # @NoMove @IgnorePep8
      9 import inspect
     10 import os

/usr/local/lib/python3.7/dist-packages/git/exc.py in <module>()
      8 from gitdb.exc import BadName  # NOQA @UnusedWildImport skipcq: PYL-W0401, PYL-W0614
      9 from gitdb.exc import *     # NOQA @UnusedWildImport skipcq: PYL-W0401, PYL-W0614
---> 10 from git.compat import safe_decode
     11 
     12 # typing ----------------------------------------------------

/usr/local/lib/python3.7/dist-packages/git/compat.py in <module>()
     30     overload,
     31 )
---> 32 from git.types import TBD
     33 
     34 # ---------------------------------------------------------------------------

/usr/local/lib/python3.7/dist-packages/git/types.py in <module>()
     16     from typing import TypeGuard  # noqa: F401
     17 else:
---> 18     from typing_extensions import TypeGuard  # noqa: F401
     19 
     20 

ImportError: cannot import name 'TypeGuard' from 'typing_extensions' (/usr/local/lib/python3.7/dist-packages/typing_extensions.py)

[Jonas Rauber]

This error isn't being thrown by Foolbox itself but by one of our dependencies, GitPython.
As a quick fix, maybe try installing an older version of that, e.g. python3 -m pip install GitPython==3.0.7.
Does that help?

[yuheng huang]

This error isn't being thrown by Foolbox itself but by one of our dependencies, GitPython.
As a quick fix, maybe try installing an older version of that, e.g. python3 -m pip install GitPython==3.0.7.
Does that help?

Thanks for the advice. Yes, this helps!