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Unable to import FeatureHasher with scikit-learn 0.22

See original GitHub issue

Description

Importing FeatureHasher results in an ImportError

Steps/Code to Reproduce

from sklearn.feature_extraction import FeatureHasher

Expected Results

Example: No error is thrown.

Actual Results

Traceback (most recent call last): File “<stdin>”, line 1, in <module> File “/home/franz/.local/lib/python3.6/site-packages/sklearn/feature_extraction/init.py”, line 8, in <module> from ._hashing import FeatureHasher ImportError: cannot import name ‘FeatureHasher’

However, it’s working with 0.21

Versions

System: python: 3.6.9 (default, Nov 7 2019, 10:44:02) [GCC 8.3.0] executable: /usr/bin/python3 machine: Linux-4.15.0-72-generic-x86_64-with-Ubuntu-18.04-bionic

Python dependencies: pip: 9.0.1 setuptools: 41.6.0 sklearn: 0.22 numpy: 1.17.4 scipy: 1.3.3 Cython: 0.29.13 pandas: 0.25.3 matplotlib: 3.1.1 joblib: 0.14.1

Built with OpenMP: True

Issue Analytics

State:
Created 4 years ago
Comments:9 (5 by maintainers)

Top GitHub Comments

2reactions

FranzForstmayrcommented, Dec 13, 2019

Hi,

thanks a lot, you were right. When executing the following:

----@----:~$ pip3 uninstall scikit-learn
...
  /home/ecs/.local/lib/python3.6/site-packages/sklearn/utils/tests/test_utils.py
  /home/ecs/.local/lib/python3.6/site-packages/sklearn/utils/tests/test_validation.py
  /home/ecs/.local/lib/python3.6/site-packages/sklearn/utils/validation.py
  /home/ecs/.local/lib/python3.6/site-packages/sklearn/utils/weight_vector.cpython-36m-x86_64-linux-gnu.so
Proceed (y/n)? y
  Successfully uninstalled scikit-learn-0.21.3
----@----:~$ pip3 uninstall scikit-learn
Uninstalling scikit-learn-0.21.0:
  /home/ecs/.local/lib/python3.6/site-packages/scikit_learn-0.21.0.dist-info/INSTALLER
  /home/ecs/.local/lib/python3.6/site-packages/scikit_learn-0.21.0.dist-info/METADATA
  /home/ecs/.local/lib/python3.6/site-packages/scikit_learn-0.21.0.dist-info/RECORD
  /home/ecs/.local/lib/python3.6/site-packages/scikit_learn-0.21.0.dist-info/WHEEL
  /home/ecs/.local/lib/python3.6/site-packages/scikit_learn-0.21.0.dist-info/top_level.txt
Proceed (y/n)? y
  Successfully uninstalled scikit-learn-0.21.0
----@----:~$ pip3 uninstall scikit-learn

You can see there were actually two scikit-learn versions (0.21.0 and 0.21.3) installed. Solved for me!

0reactions

glemaitrecommented, Dec 13, 2019

Be aware of https://github.com/scikit-learn/scikit-learn/issues/15884. On some Ubuntu distribution pip3 let some *.so file during updating. Then, there a name conflict and we need to remove manually some the *.so files (_online_lda.cython***.so and _hashing.cython***).