No module named 'quaternion.numpy_quaternion'

I’m trying to install numpy-quaternion:

pip install numpy-quaternion … Successfully installed numpy-quaternion-2020.11.2.17.0.49

but then it fails when I try to import it: I have checked the folder with __init__.py and there is no numpy_quaternion.py file

I use Python 3.8.5 (tags/v3.8.5:580fbb0, Jul 20 2020, 15:57:54) [MSC v.1924 64 bit (AMD64)] on win32 np.version.version ‘1.18.1’

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State:
Created 3 years ago
Comments:5 (2 by maintainers)

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4reactions

nathanielvirgocommented, May 22, 2022

In case it helps someone else: I had a similar error to this - after installing numpy-quaternion I got an error “ModuleNotFoundError: No module named ‘quaternion’”.

It turns out this was because I had also installed a package called “quaternion”, probably by accident when I was trying to install numpy-quaternion previously. I could fix the problem by runnning

python -m pip uninstall quaternion

and then, after that, running

python -m pip install --upgrade --no-deps --force-reinstall numpy-quaternion

It really seems I had to do both of those things, in that order, before it would work.

0reactions

kaif2100commented, Dec 9, 2020

Seems, it was true about broken python. I’ve fully reinstalled it and everything works now Thanks 😃

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