Update app.py

app.py

@@ -55,14 +55,14 @@ if "CO_API_KEY" not in os.environ:
                    ".streamlit/secrets.toml or as an environment variable.")
 
 co = cohere.Client(os.environ["CO_API_KEY"])
-list_of_titles = list(df["content.title"].values)
-
-embeds = co.embed(texts=list_of_titles,                  				
-  					model="small").embeddings
-
-embeds_npy = np.array(embeds)
 
 def get_visualizations():
+    list_of_titles = list(df["content.title"].values)
+    embeds = co.embed(texts=list_of_titles,                  				
+  					model="small").embeddings
+    
+    embeds_npy = np.array(embeds)
+    
     # Load and initialize BERTopic to use KMeans clustering with 8 clusters only.
     cluster_model = KMeans(n_clusters=8)
     topic_model = BERTopic(hdbscan_model=cluster_model)