test: Remove coercion to str from plotting function and joining keywords to get single string

app.py

@@ -98,8 +98,7 @@ def draw_interactive_scatter_plot(
     values_color_set = sorted(values_color)
     values_list = values.astype(str).tolist()
     values_set = sorted(values_list)
-    labels_list = labels.astype(str).tolist()
-    source = ColumnDataSource(data=dict(x=xs, y=ys, text=texts, label=values_list, original_label=labels_list))
+    source = ColumnDataSource(data=dict(x=xs, y=ys, text=texts, label=values_list, original_label=labels))
     hover = HoverTool(tooltips=[(text_column, "@text{safe}"), (label_column, "@original_label")])
     n_colors = len(set(values_color_set))
     if n_colors not in Pallete:
@@ -158,6 +157,7 @@ def generate_plot(
                 most_descriptive = np.argmax(cluster_to_words_similarities)
                 cluster_to_words_similarities = np.delete(cluster_to_words_similarities, most_descriptive)
                 cluster_keyword[label].append(cluster_words[most_descriptive])
+            cluster_keyword[label] = ', '.join(cluster_keyword[label])
         encoded_labels_keywords = [cluster_keyword[encoded_label] for encoded_label in encoded_labels]
         embeddings_2d = get_tsne_embeddings(embeddings)
     plot = draw_interactive_scatter_plot(