无法在 Jupyter Notebook 中加载 matplotlib

Question

I'm Unable to load matplotlib in Jupyter Notebook but woking fine in python command line shell,

Is there anything I need to configure to make it working?

Following is the error I'm getting in Jupyter Notebook

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-99ba79ecbbfb> in <module>()
----> 1 from matplotlib import pyplot as plt

ImportError: No module named matplotlib

And in command line I can access it like the following:

Python 3.7.3 (default, Mar 27 2019, 23:47:09) 
[Clang 10.0.0 (clang-1000.10.44.4)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from matplotlib import pyplot as plt
>>> 

Answer 1

Seems like it's working now I ran the following command as specified here

python3 -m pip install ipykernel
python3 -m ipykernel install --user

Thanks.

Answer 2

One way is to check if you installed matplotlib using pip3 (if you used pip3 to install jupyter notebook , which looks like is your case).

Another way is to add the path of site-wide packages (where of course matplotlib is installed). In your Jupyter notebook console:

import sys
PATH = '/usr/lib64/python3.7/site-packages/'
sys.path.append(PATH)

Answer 3

Notebook is launched from another virtual python environment.

You can check paths to python interpreters, that run your notebook and interactive shell:

import sys
print(sys.executable)

I'm sure, they will be different.