Update app.py

app.py

@@ -20,7 +20,8 @@ def main():
     cal = create_calendar(year, month)
 
     st.write("Choose a day to schedule an appointment:")
-    day = st.selectbox("Day", [day[0].day for week in cal for day in week if day[0].month == month])
+    day_options = [day.day for week in cal for day in week if day.month == month]
+    day = st.selectbox("Day", day_options)
     hour = st.selectbox("Hour", [str(i).zfill(2) for i in range(0, 24)])
     minute = st.selectbox("Minute", [str(i).zfill(2) for i in range(0, 60)])
     duration = st.selectbox("Duration (hours)", [0.5, 1])