Hi Everyone! Has anyone used matplotlib 2.0.0 with Kedro 0.17.7 before? I am getting error. I have installed PyQt5 and pyside2 but still getting the same error. I'd grateful for any help. Thanks a lot!

File "/usr/local/lib/python3.6/site-packages/matplotlib/backends/qt_compat.py", line 175, in <module>
    "Matplotlib qt-based backends require an external PyQt4, PyQt5,\n"
ImportError: Matplotlib qt-based backends require an external PyQt4, PyQt5,
or PySide package to be installed, but it was not found.

hi @Suyash Shrivastava! I don't think it's a Kedro problem but I'm happy to help 😄

Hi Juanlu, PyQt5 is installed at /home/cdsw/.local/lib/python3.6/site-packages

then it's probably a problem of Python not finding it in the right path

any idea how to solve that 🙂 btw thanks a lot for the help!

my recommendation would be to use a virtual environment and install both matplotlib and PyQt5 on it:

$ cd /home/cdsw/Projects/kedro-test
$ /usr/local/bin/python3.6 -m venv .venv
$ source .venv/bin/activate
(.venv) $ pip install matplotlib pyqt5 pyside2  # didn't test
(.venv) $ python -c "import matplotlib.backends.qt_compat"  # check if it works

yes thats a problem. I am working on client infra where I can't create virtual environments matplotlib is installed at /usr/local/lib/python3.6/site-packages

if you can't create virtual environments then you'll need to

/usr/local/bin/python3.6 -m pip install pyqt5

. there's a chance that you already did, and it ended up in

~/.local

. that means that you don't have permissions to do

sudo ... pip install

. which is a good thing anyway 😄 so another thing you can try is launching your script with

PYTHONPATH=/home/cdsw/.local/lib/python3.6/site-packages

so that the global matplotlib "sees" the local PyQt5

Thanks Juanlu!, will try that and let you know!

+1 on

PYTHONPATH

or sys.path if virtualenv is not an option

cc @Amith Nair