rotate axis labels

app.py

@@ -92,6 +92,8 @@ def plot_emotion_heatmap(heatmap_data):
     plt.title("Sentence-level emotion confidences")
     plt.xlabel("Sentences")
     plt.ylabel("Emotions")
+    plt.xticks(rotation=45)
+    plt.yticks(rotation=0)
     plt.subplots_adjust(left=0.2, right=0.95, top=0.9, bottom=0.2)
     plt.tight_layout()
     return fig