Python 3 Compatibilty?- No Module Named Altair?

Hello,

I’m relatively new to the python world, so please forgive me if this post is not descriptive enough. When I try to load Altair into my notebook, I get an error message saying there is no module named altair, but when run Bash to check what packages I have, I have it loaded.

I am using Python 3 in virtualenv. Here is my code:

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-cb7a8f302186> in <module>()
      1 import pandas as pd
----> 2 from altair import Chart

ImportError: No module named 'altair'

%%bash
pip list
altair (1.2.0)

Is Altair not compatible with Python 3? Running it with Python 2 seems to work ok.

[jakevdp]

For IPython newer than version 7.0, there is no need for the sys.executable hack. Just use the pip install magic:

%pip install altair vega_datasets

[docjsha]

I had the same issue after installing altair in my conda env running on python 3.6. I solved it by reinstalling jupyter notebook along with altair and vega:

conda install -c conda-forge altair vega_datasets notebook vega