问题
I'm using the library node2vec, which is based on gensim word2vec model to encode nodes in an embedding space, but when i want to fit the word2vec object I get this warning:
C:\Users\lenovo\Anaconda3\lib\site-packages\gensim\models\base_any2vec.py:743: UserWarning: C extension not loaded, training will be slow. Install a C compiler and reinstall gensim for fast training.
Can any one help me to fix this issue please ?
回答1:
gensim relies on extension modules that need to be compiled. Both defaults and the conda-forge channel provide prebuilt versions that will work out of the box.
conda install gensim
or
conda install -c conda-forge gensim
are probably the easiest way to get gensim to work.
回答2:
For me, degrading back to Gensim version 3.7.1 from 3.7.3 worked.
回答3:
anaconda prompt conda update conda-build
== windows 7 (32bit) python 3.7.3 conda-build 3.18.5 gensim 3.4.0
回答4:
I've faced this issue for a long time when I was running W2V Models which requires 'gensim'. First of all I've installed Anaconda Navigator and then installed required packages using pip. I've installed gensim manually using pip in cmd. When I run the W2V model, it took 40 min to train and give the result, which made me annoying and wasted a lot of time.
This problem got solved now. I just did what the warning showed. I've uninstalled gensim from my computer. Prior to that I've already created a system path of mingw-w64 in the environment variable which is an environment for c,c++ etc., programs. Later, I've reinstalled gensim using 'pip install gensim'.
Now the program is running within seconds which made a drastic change in the execution time.
Hope this helps...
来源：https://stackoverflow.com/questions/55978013/how-to-fix-c-extension-not-loaded-training-will-be-slow-install-a-c-compiler