Cannot import packes from within conda virtual environment

0
votes

I am using Python 3.8 on a Ubuntu 20.04 computer. So far, I had no problem importing packages from either Spyder of Jupyter.

I have created a conda virtual environment called theory using Python 3.6, as confirmed by running python --version from within this conda environment.

conda list reveals that numpy is installed:

numpy 1.19.4 pypi_0 pypi

Opening a Python interactive session from the terminal and importing numpy in there works like a charm. However, when trying to import numpy from within Spyder, I am getting a "Module Not Found" error:

ModuleNotFoundError: No module named 'numpy'

Here is what I tried to fix this issue:

  • I tried uninstalling and reinstalling numpy using pip install numpy (and pip3 install numpy).
  • I tried updating conda following the answer provided in this GitHub post: conda update --prefix /home/sheldon/anaconda3 anaconda .
  • I tried specifying the path to the numpy package in the PYTHONPATH manager directly in Spyder, pointing to /home/sheldon/anaconda3/envs/

What am I doing wrong here?

EDIT: I checked that Numpy 1.9.4. actually supports Python 3.6

EDIT: Just recreated a new Python 3.6 environment from scratch and I can import numpy just fine...

1
pythonpython-3.xnumpypipconda
Try this. Within Spyder, go to Tools-->Preferences-->PythonInterpreter, and choose the file called python.exe under envs/theory. Then close and re-open Spyder. The path to your envs folder depends upon your os, I think it is under your Anaconda folder. Note -- this worked for all my previous conda envs, but didn't work for my most recently created conda env, for some reason. For that, I had to actually install spyder-kernels package within the env itself, and run spyder from within that conda env (using conda command-line). Can't say I understand much, just thinking out loud. – fountainhead
Thanks for your suggestion. I tried all possible interpreters (python, python3, python3.6, python3.6m) in anaconda3/envs/theory/bin but all of these made the kernel crash. I had to revert back to the default interpreter (i.e. the same as Spyder). – Sheldon
The interesting thing is that in spite of having a Python 3.6 installed, Spyder indicates to be running under Python 3.8.5. I wonder if this could be the cause of my problem. – Sheldon
Yes, showing the wrong version of Python could be the clue. My other suggestion might work. (Installing spyder-kernels within the env -- after activating the env. Then, running spyder from the conda env itself). Sorry to be throwing blind suggestions, without full knowledge. Just in case you're in the mood for it. – fountainhead
This old question of yours and its answer seem to be still relevant for your current problem. – fountainhead

1 Answers

0
votes

can you please try this :

uninstall numpy with pip uninstall and re install it with

conda install numpy

Not pip install..