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I was trying to use numpy in Jupyter Notebook in a Python3 virtual environment, but the encountered an error.

In terminal, I did:

$ python3 -m venv py3env
$ source py3env/bin/activate
(py3env)$ jupyter notebook

And on the Jupyter page, I created a new notebook and executed the followings

!pip install numpy
import numpy as np

And the resulting output is this:

Requirement already satisfied: numpy in /Users/MyName/py3env/lib/python3.9/site-packages (1.20.2)
---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-4-d83b6b4f94f9> in <module>
      1 get_ipython().system('pip install numpy')
----> 2 import numpy as np

ModuleNotFoundError: No module named 'numpy'

The package is already installed but still cannot be found...?

Is there a way to fix this issue?

Greenhill
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  • You need to configure notebooks with multiple environments. check this https://stackoverflow.com/questions/37433363/link-conda-environment-with-jupyter-notebook – Divyanshu Srivastava Apr 11 '21 at 18:37

2 Answers2

1

You may be using pip from a different python installation.

To install with the same python executable as your jupyter kernel, in one cell run:

import sys

Then in another cell run:

!{sys.executable} -m pip install numpy
Brian Larsen
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It would appear you are trying to call a dependency you installed on a virtual environment, attempt to reinstall numpy on jupyter, then try again.

Tunmise Adeyemo
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