fix example select

app.py

@@ -17,7 +17,9 @@ NOTES = 'This app is adapted from <a href="https://github.com/THUDM/VisualGLM">h
 import json
 import requests
 import base64
+import hashlib
 
+default_chatbox = [("", "Hi, What do you want to know about this image?")]
 
 URL = os.environ.get("URL")
 
@@ -31,9 +33,11 @@ def process_image(image_prompt):
     resized_image.save(filename)
     print(f"temporal filename {filename}")
     with open(filename, "rb") as image_file:
-        encoded_img = str(base64.b64encode(image_file.read()), encoding='utf-8')
+        bytes = base64.b64encode(image_file.read())
+        encoded_img = str(bytes, encoding='utf-8')
+        image_hash = hashlib.sha256(bytes).hexdigest()
         os.remove(filename)
-        return encoded_img
+        return encoded_img, image_hash
 
 
 def is_chinese(text):
@@ -46,7 +50,8 @@ def post(
         temperature,
         top_p,
         image_prompt,
-        result_previous        
+        result_previous,
+        hidden_image        
         ):
     result_text = [(ele[0], ele[1]) for ele in result_previous]
     for i in range(len(result_text)-1, -1, -1):
@@ -62,18 +67,24 @@ def post(
             result_text.append((input_text, '图片为空！请上传图片并重试。'))
         else:
             result_text.append((input_text, 'Image empty! Please upload a image and retry.'))
-        return input_text, result_text
+        return input_text, result_text, hidden_image
     elif input_text == "":
         print("Text empty")
         result_text.append((input_text, 'Text empty! Please enter text and retry.'))
-        return "", result_text                
+        return "", result_text, hidden_image                
 
     headers = {
             "Content-Type": "application/json; charset=UTF-8",
             "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36",
         }
     if image_prompt:
-        encoded_img = process_image(image_prompt)
+        encoded_img, image_hash = process_image(image_prompt)
+        print(f"image_hash:{image_hash}, hidden_image_hash:{hidden_image}")
+
+        if hidden_image is not None and image_hash != hidden_image:
+            print("image has been update")
+            result_text = []        
+        hidden_image = image_hash        
     else:
         encoded_img = None
 
@@ -93,21 +104,26 @@ def post(
             result_text.append((input_text, '超时！请稍等几分钟再重试。'))
         else:
             result_text.append((input_text, 'Timeout! Please wait a few minutes and retry.'))
-        return "", result_text
+        return "", result_text, hidden_image
     print('请求完毕...')
+    # response = {'result':input_text}
 
     answer = str(response['result'])
     result_text.append((input_text, answer))
     print(result_text)
     print('finished')
-    return "", result_text
+    return "", result_text, hidden_image
 
 
 def clear_fn(value):
-    return "", [("", "Hi, What do you want to know about this image?")], None
+    return "", default_chatbox, None
 
 def clear_fn2(value):
-    return [("", "Hi, What do you want to know about this image?")]
+    return default_chatbox
+
+def io_fn(a, b, c):
+    print(f"call io_fn")
+    return a, b
 
 
 def change_language(value):
@@ -148,8 +164,7 @@ def main():
                             change_button = gr.Button('Change hint to English', visible=False)
             with gr.Column(scale=5.5):
                 result_text = gr.components.Chatbot(label='Multi-round conversation History', value=[("", "Hi, What do you want to know about this image?")]).style(height=550)
-
-
+                hidden_image_hash = gr.Textbox(visible=False)
 
         gr_examples = gr.Examples(examples=[[example["text"], example["image"]] for example in examples], 
                                   inputs=[input_text, image_prompt],
@@ -159,10 +174,10 @@ def main():
         gr.Markdown(NOTES)
 
         print(gr.__version__)
-        run_button.click(fn=post,inputs=[input_text, temperature, top_p, image_prompt, result_text],
-                         outputs=[input_text, result_text])
-        input_text.submit(fn=post,inputs=[input_text, temperature, top_p, image_prompt, result_text],
-                         outputs=[input_text, result_text])
+        run_button.click(fn=post,inputs=[input_text, temperature, top_p, image_prompt, result_text, hidden_image_hash],
+                         outputs=[input_text, result_text, hidden_image_hash])
+        input_text.submit(fn=post,inputs=[input_text, temperature, top_p, image_prompt, result_text, hidden_image_hash],
+                         outputs=[input_text, result_text, hidden_image_hash])
         clear_button.click(fn=clear_fn, inputs=clear_button, outputs=[input_text, result_text, image_prompt])
         image_prompt.upload(fn=clear_fn2, inputs=clear_button, outputs=[result_text])
         image_prompt.clear(fn=clear_fn2, inputs=clear_button, outputs=[result_text])