Update app.py

app.py

@@ -70,7 +70,7 @@ def network_visualizer(yaxis, city, fstyear,lastyr, num_nodes):
     
     G = nx.from_pandas_edgelist(edges, source = 'Teacher_ID', target = 'Student_ID', create_using = nx.DiGraph())
     nodes = list(G.nodes)
-    node_reports = [narrator_bios[narrator_bios['Rawi ID'].astype(int) == int(x)]['Number of Narrations'] for x in nodes]
+    node_reports = [narrator_bios[narrator_bios['Rawi ID'].astype(int) == int(x)]['Number of Narrations'].to_list()[0] for x in nodes]
     nodes_df = pd.DataFrame({'Node': nodes, 'Report': node_reports}).sort_values('Report').head(num_nodes)
     nodes_remove = list(set(nodes) - set(nodes_df['Node'].to_list()))
     [G.remove_nodes_from(nodes_remove)]