fix: Type hints

app.py

@@ -7,6 +7,7 @@ import gradio as gr
 from transformers import pipeline
 from shap import Explainer
 import numpy as np
+from typing import Tuple, Dict, List
 
 
 def main():
@@ -27,8 +28,8 @@ def main():
         "😊",
     ]
 
-    def classification(text) -> tuple[dict[str, float], dict]:
-        output: list[dict] = pipe(text)[0]
+    def classification(text) -> Tuple[Dict[str, float], dict]:
+        output: List[dict] = pipe(text)[0]
         print(output)
 
         explainer = Explainer(pipe)
@@ -40,7 +41,7 @@ def main():
         if np.abs(shap_values).max() <= boundary:
             boundary = np.abs(shap_values).max() - 1e-6
 
-        words: list[str] = explanation.data[0]
+        words: List[str] = explanation.data[0]
         records = list()
         char_idx = 0
         for word, shap_value in zip(words, shap_values):