Traceback (most recent call last):


 "/home/ballal/Skripte/PCA.py", line 33, in <module>

from sklearn.preprocessing import StandardScaler


 "/home/ballal/Skripte/venv/lib64/python3.6/site-packages/sklearn/__init__.py", line 76, in <module>

from .base import clone


 "/home/ballal/Skripte/venv/lib64/python3.6/site-packages/sklearn/base.py", line 16, in <module>

from .utils import _IS_32BIT


 "/home/ballal/Skripte/venv/lib64/python3.6/site-packages/sklearn/utils/__init__.py", line 17, in <module>

from . import _joblib


 "/home/ballal/Skripte/venv/lib64/python3.6/site-packages/sklearn/utils/_joblib.py", line 8, in <module>

import joblib


 "/home/ballal/Skripte/venv/lib64/python3.6/site-packages/joblib/__init__.py", line 120, in <module>

from .parallel import Parallel


 "/home/ballal/Skripte/venv/lib64/python3.6/site-packages/joblib/parallel.py", line 29, in <module>

from .externals.cloudpickle import dumps, loads


 "/home/ballal/Skripte/venv/lib64/python3.6/site-packages/joblib/externals/cloudpickle/__init__.py", line 7, in <module>

from .cloudpickle import *


 "/home/ballal/Skripte/venv/lib64/python3.6/site-packages/joblib/externals/cloudpickle/cloudpickle.py", line 77, in <module>

from typing import ClassVar
ImportError: cannot import name 'ClassVar'

Traceback (most recent call last):


 "/usr/local/lib/python3.6/site-packages/pipenv/vendor/pipdeptree.py", line 20, in <module>

from pip import get_installed_distributions, FrozenRequirement
ImportError: cannot import name 'get_installed_distributions'
