Remove unused libraries
@@ -13,8 +13,7 @@ This example shows how multiple user inputs can be layered onto a chart. The fou
# category: interactive charts
import altair as alt
from vega_datasets import data
-import urllib, json
-import pandas as pd
+
movies = alt.UrlData(data.movies.url, format=alt.DataFormat(parse={"Release_Date":"date"}))
