gensimの読み込みで実行時エラーが発生する

意外と日本語で検索にヒットしないのでメモ。

発生したエラーはこんな感じ

>>> from gensim.models import word2vec
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.7/site-packages/gensim/__init__.py", line 5, in <module>
    from gensim import parsing, corpora, matutils, interfaces, models, similarities, summarization, utils  # noqa:F401
  File "/usr/local/lib/python3.7/site-packages/gensim/corpora/__init__.py", line 6, in <module>
    from .indexedcorpus import IndexedCorpus  # noqa:F401 must appear before the other classes
  File "/usr/local/lib/python3.7/site-packages/gensim/corpora/indexedcorpus.py", line 15, in <module>
    from gensim import interfaces, utils
  File "/usr/local/lib/python3.7/site-packages/gensim/interfaces.py", line 21, in <module>
    from gensim import utils, matutils
  File "/usr/local/lib/python3.7/site-packages/gensim/matutils.py", line 1076, in <module>
    from gensim._matutils import logsumexp, mean_absolute_difference, dirichlet_expectation
  File "__init__.pxd", line 872, in init gensim._matutils
ValueError: numpy.ufunc has the wrong size, try recompiling. Expected 192, got 216
>>> 

インストールされているバージョンは 3.6.0

$ pip show gensim
Name: gensim
Version: 3.6.0
Summary: Python framework for fast Vector Space Modelling
Home-page: http://radimrehurek.com/gensim
Author: Radim Rehurek
Author-email: me@radimrehurek.com
License: LGPLv2.1
Location: /usr/local/lib/python3.7/site-packages
Requires: scipy, numpy, six, smart-open
Required-by: 

バージョンを一個前(3.5.0)に戻したらエラーが消えた

$ pip install gensim==3.5.0

そもそも他の人でも起きているのか謎い。。 ただ、Docker環境を作って検証したけど発生したのできっと他にも困っている人がいるはず！