Update app.py

app.py

@@ -82,6 +82,10 @@ import altair as alt
 import pandas as pd
 import os
 
+import altair as alt
+import pandas as pd
+import os
+
 def progress_bar_chart() -> alt.Chart:
     source_dataset, _ = obtain_source_target_datasets()
     total_records = int(os.getenv("TARGET_RECORDS"))  # The total goal of records.
@@ -112,18 +116,18 @@ def progress_bar_chart() -> alt.Chart:
         text='text:N'
     )
 
-    # Remove the unnecessary axis lines and ticks.
-    progress_bar = progress_bar.configure_axis(
-        grid=False
-    ).configure_view(
-        strokeWidth=0
-    ).properties(
+    # Combine the bar and the label into a layered chart.
+    chart = alt.layer(progress_bar, label_text).properties(
         title='Progress Towards Goal',
         width=800,
         height=150
     )
 
-    return (progress_bar + label_text)
+    # Configure the whole chart instead of individual elements.
+    chart = chart.configure_axis(grid=False).configure_view(strokeWidth=0)
+
+    return chart
+