The orange3-timeseries package is incompatible with scipy1.8.0

[HannesLum]

Timeseries version

0.3.12 (in a development directory)

Orange version

3.31.1

Expected behavior

After setting up a new virtual environment with python3.8.12 and executing the following code in the command line (from the timeseries-directory)

pip install orange3==3.31.1
pip install -e .
python -m Orange.canvas

Orange should have opened itself with the timeseries-add-on successfully installed.

Actual behavior

Orange starts itself, but timeseries is nowhere to be found. Looking into the console-output reveals the reason:

Cannot import name '_centered' from 'scipy.signal.signaltools'

According to this stackoverflow-question, the reason for this is that _centered is a private function and thus is not guaranteed to be there from one version of scipy to the next.

Additional info (worksheets, data, screenshots, ...)

Installing an earlier scipy-version will solve the problem:

pip install scipy==1.7.3
pip install orange3==3.31.1
pip install -e .
python -m Orange.canvas

But it might be a good idea to look into why the private function was imported in the first place for future versions of orange3 and if it could be replaced with something else.

[janezd]

Resolved in #178.