Update app.py

app.py

@@ -3,15 +3,27 @@
 import panel as pn
 import vega_datasets
 
+import pandas as pd
+import altair as alt
+import numpy as np
+import pprint
+import datetime as dt
+from vega_datasets import data
+import matplotlib.pyplot as plt
+
+
 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'})
+
 df2_approve = df2[df2['choice'] == 'approve']
 
 # Enable Panel extensions
-pn.extension()
+# pn.extension()
 # pn.extension('vega', 'tabulator')
-# pn.extension(design='bootstrap')
-# pn.extension('vega')
+pn.extension(design='bootstrap')
+pn.extension('vega')
 
 template = pn.template.BootstrapTemplate(
     title='SI649 Altair3',