Update app.py

app.py

@@ -8,11 +8,14 @@ st.write(df)
 
 year_options = df['year'].unique().tolist()
 year = st.selectbox("Which year would you like to see?", year_options, 0)
-df = df[df['year'] == year]
+#df = df[df['year'] == year]
 
 fig = px.scatter(df, x="gdpPercap", y="lifeExp",
                  size="pop", color="continent", hover_name="continent",
-                 log_x=True, size_max=55, range_x=[100,100000], range_y=[25,90])
+                 log_x=True, size_max=55, range_x=[100,100000], range_y=[25,90],
+                 animation_frame="year", animation_group="country")
+                
+                )
 
 fig.update_layout(width=800)