Download sample data before running Bokeh

I'm playing around with Python's live bokeh on jupyter. There are many galleries displayed in the document, and if you copy and paste the drawing code you like to your jupyter and execute it, a beautiful graph will be generated, but some of them will return an error. You have to download the sample data first. http://bokeh.pydata.org/en/0.10.0/docs/installation.html

import bokeh.sampledata bokeh.sampledata.download()

And then run the sample code to see it.