在Anaconda中更新软件包后，“从sklearn.preprocessing导入LabelEncoder，OneHotEncoder”失败

Question

recently I updated packages in anaconda in order to install keras, and tensorflow. Now my program fails on the next line:

from sklearn.preprocessing import LabelEncoder, OneHotEncoder.

Traceback (most recent call last):

  File "<ipython-input-1-83540d56f55d>", line 1, in <module>
    from sklearn.preprocessing import LabelEncoder, OneHotEncoder

  File "/Users/teologov/anaconda/lib/python3.6/site-packages/sklearn/__init__.py", line 134, in <module>
    from .base import clone

  File "/Users/teologov/anaconda/lib/python3.6/site-packages/sklearn/base.py", line 13, in <module>
    from .utils.fixes import signature

  File "/Users/teologov/anaconda/lib/python3.6/site-packages/sklearn/utils/__init__.py", line 11, in <module>
    from .validation import (as_float_array,

  File "/Users/teologov/anaconda/lib/python3.6/site-packages/sklearn/utils/validation.py", line 18, in <module>
    from ..utils.fixes import signature

  File "/Users/teologov/anaconda/lib/python3.6/site-packages/sklearn/utils/fixes.py", line 144, in <module>
    from scipy.sparse.linalg import lsqr as sparse_lsqr  # noqa

  File "/Users/teologov/anaconda/lib/python3.6/site-packages/scipy/sparse/linalg/__init__.py", line 114, in <module>
    from .isolve import *

  File "/Users/teologov/anaconda/lib/python3.6/site-packages/scipy/sparse/linalg/isolve/__init__.py", line 6, in <module>
    from .iterative import *

  File "/Users/teologov/anaconda/lib/python3.6/site-packages/scipy/sparse/linalg/isolve/iterative.py", line 7, in <module>
    from . import _iterative

ImportError: dlopen(/Users/teologov/anaconda/lib/python3.6/site-packages/scipy/sparse/linalg/isolve/_iterative.cpython-36m-darwin.so, 2): Library not loaded: @rpath/libgfortran.3.dylib
  Referenced from: /Users/teologov/anaconda/lib/python3.6/site-packages/scipy/sparse/linalg/isolve/_iterative.cpython-36m-darwin.so
  Reason: image not found

Could you please help me to fix it.

Answer 1

从头开始重新安装解决了该问题，已安装的软件包中存在一些版本冲突。

Answer 2

In my case i upgrade the scikit learn package. go to anaconda navigator then environments then search for scikit learn

then upgrade it and also upgrade scipy along with it(same process)