JupiterLab matplotlib issue

[sofiakalinina33]

Hello 👋

I have a problem when using JupiterLab. I am running the following code:

import numpy as np 
import matplotlib.pyplot as plt 
x = np.linspace(-10, 10, 200) 
y = np.sin(np.pi * x)/(np.pi * x) 
plt.plot(x, y) 
plt.show() 

There is no visible output and the kernel restarts itself.

I would be very gratefull for your help 💌

[ianthomas23]

Please you can supply more information about what Operating System you are using, how you installed the packages and what versions they are.

For example, the outputs of

jupyter --version

and

python -c "import matplotlib as mpl; print(mpl.__version__)" 

would be useful.

[sofiakalinina33]

Sure 😃

1. I am using Debian GNU/Linux 11 (bullseye) OS.
2. My Jupiter version is 5.5.0
3. And matplotlib version is 3.8.2

[ianthomas23]

OK, so you are using the Debian system packages, installed using apt install or Synaptic or similar? Usually we would recommend installing in a virtual environment using conda, virtualenv, or pyenv, etc as that gives you greater control over the versions of packages installed.

Please can you still run

jupyter --version

and paste what that gives you, as this will show the version of Python packages installed rather than the Debian package.