Print supresses display of vega-lite figure

I've encounterd a problem with pyvega and the Python print function.
The following example works, hence the figure is displayed correctly in the notebook:

import altair
altair.Chart(altair.load_dataset('movies')).encode(x='Production_Budget', y='IMDB_Rating')

If I print anything in this same cell, the figure output disappears:

import altair
print('foo')
altair.Chart(altair.load_dataset('movies')).encode(x='Production_Budget', y='IMDB_Rating')

Is this expected behavior?
Niels

[jakevdp]

Hi Niels – thanks for the report. I've reported this previously on the altair repo (vega/altair#199) but it's definitely an ipyvega problem rather than an altair problem.

Definitely not expected behavior.