Update app.py

app.py

@@ -133,10 +133,9 @@ def get_llm_response(prompt: str, model_name: str = "meta-llama/Llama-2-7b-chat-
     return answer
 
 ############################################
-# Gradio Interface Functions
+# Gradio Interface Setup
 ############################################
 
-
 with gr.Blocks() as demo:
     gr.Markdown("# RepoChat - Chat with Repository Files")
     
@@ -145,7 +144,7 @@ with gr.Blocks() as demo:
             gr.Markdown("### Repository Information")
             github_url_input = gr.Textbox(label="GitHub Repository URL", placeholder="https://github.com/username/repository")
             load_repo_btn = gr.Button("Load Repository Contents")
-            # Initialize dropdown with empty choices and an empty default value.
+            # Initialize dropdown with empty choices and empty default value.
             file_dropdown = gr.Dropdown(label="Select a File", interactive=True, value="", choices=[])
             repo_content_output = gr.Textbox(label="File Content", interactive=False, lines=10)
         with gr.Column(scale=2):
@@ -171,12 +170,12 @@ with gr.Blocks() as demo:
     # Callback to update the file dropdown.
     def update_file_dropdown(github_url):
         files = load_repo_contents_backend(github_url)
-        if isinstance(files, str):  # If there's an error message.
+        if isinstance(files, str):  # Error message case.
             print("Error loading files:", files)
-            return gr.Dropdown.update(choices=[], value="")
+            return gr.update(choices=[], value="")
         print("Files loaded:", files)
-        # Set the choices but leave value as empty to force user selection.
-        return gr.Dropdown.update(choices=files, value="")
+        # Return the updated dropdown with choices but with no default value selected.
+        return gr.update(choices=files, value="")
 
     load_repo_btn.click(fn=update_file_dropdown, inputs=[github_url_input], outputs=[file_dropdown])