matplotlib imshow function does not work

[maryamag85]

I am using kaggle/python image in docker to run a kaggle kernel but imshow does not work on my system. nothing is shown, even no plot window pops up. I have the ubuntu 16, pycharm 2017 connected to the latest docker version. any suggestion?

[nerdcha]

Ah yes, anything graphics-related can get tricky when containers are involved. I'm not an expert on that, but if you want to explore a general solution, there are ideas here and here.

The solution that I myself use is a bit hacky, but it works. If you start a Jupyter notebook server inside the container, you can connect to it using a web browser, and then graphics and plot output will show up in the notebook as you edit. You'd do that with something like docker run -v $PWD:/tmp/working -w=/tmp/working -p 8888:8888 --rm -it kaggle/python jupyter notebook --no-browser --ip="\*" --notebook-dir=/tmp/working on the host, and then pointing your browser to http://localhost:8888.

Hope that helps!