RuntimeWarning: 'nltk.downloader' found in sys.modules after import of package 'nltk', but prior to execution of 'nltk.downloader'

Question

I'm using docker to run an NLP system that uses nltk, languagetool etc... When I use docker-compose build --build-arg env=dev I get the warning message:

/usr/local/lib/python3.6/runpy.py:125: RuntimeWarning: 'nltk.downloader' found in sys.modules after import of package 'nltk', but prior to execution of 'nltk.downloader'; this may result in unpredictable behaviour warn(RuntimeWarning(msg))

Then when I use docker-compose up I get these errors when trying to run my system:

Please help me figure out how to fix this!

Answer 1

In your Dockerfile:

RUN python -c "import nltk;nltk.download('your_library')"

After pip install nltk