Import data & update packages

app.py

@@ -1,5 +1,14 @@
+import numpy as np
+import pandas as pd
+import altair as alt
 import panel as pn
-import vega_datasets
+
+
+# Data import
+df2=pd.read_csv("https://raw.githubusercontent.com/dallascard/SI649_public/main/altair_hw3/approval_topline.csv")
+df2['timestamp']=pd.to_datetime(df2['timestamp'])
+df2=pd.melt(df2, id_vars=['president', 'subgroup', 'timestamp'], value_vars=['approve','disapprove']).rename(columns={'variable':'choice', 'value':'rate'})
+
 
 # Enable Panel extensions
 pn.extension(design='bootstrap')