I am trying to run python using Jupyter-lab locally.

I installed PyTorch on my Mac using brew. However pip doesn't see it and so does python

I installed PyTorch using pipx

python inside Jupyter doesn't see torch and neither does python from the command line

In Jupyter I see this -

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
Cell In[1], line 2
  1 # First, import PyTorch
  ----> 2 import torch

ModuleNotFoundError: No module named 'torch'

From the command line I see this --

>>> import torch
Traceback (most recent call last):
File "<python-input-0>", line 1, in <module>
import torch
ModuleNotFoundError: No module named 'torch'

I am trying to run python using Jupyter-lab locally.

I installed PyTorch on my Mac using brew. However pip doesn't see it and so does python

I installed PyTorch using pipx

python inside Jupyter doesn't see torch and neither does python from the command line

In Jupyter I see this -

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
Cell In[1], line 2
  1 # First, import PyTorch
  ----> 2 import torch

ModuleNotFoundError: No module named 'torch'

From the command line I see this --

>>> import torch
Traceback (most recent call last):
File "<python-input-0>", line 1, in <module>
import torch
ModuleNotFoundError: No module named 'torch'

• python
• pytorch
• pip

• stackoverflow.com/a/78960171/7976758 pipx installs into a separate virtual env; you must use python from that virtual env. Found in stackoverflow.com/search?q=%5Bpipx%5D+ModuleNotFoundError – phd Commented Feb 5 at 19:03
• How do I use that inside Jupyter? – yyyyy Commented Feb 5 at 19:13
• Install everything including Jupyter into one virtual env and run python from that virtual env. – phd Commented Feb 5 at 20:37

1 Answer 1

Because you are not using the environment, first activate the environment then open jupyter lab and then verify pytorch

For M1/M2 Macs, use the Apple Silicon version of PyTorch Install Jupyter within the same virtual environment pip install jupyterlab

Kernel Configuration

Install ipykernel to make the virtual environment available in Jupyter bash

pip install ipykernel python -m ipykernel install --user --name=pytorch_env

Always activate your virtual environment before launching Jupyter Lab to ensure correct package visibility.