Fix reload mode for jupyter notebook and stateful demos (#8599)

* Remove deprecated method

* add changeset

* Fix bug

* Update test

* add changeset

---------

Co-authored-by: gradio-pr-bot <[email protected]>

Author: freddyaboulton

.changeset/grumpy-houses-raise.md

@@ -0,0 +1,6 @@
+---
+"@gradio/app": patch
+"gradio": patch
+---
+
+fix:Fix reload mode for jupyter notebook and stateful demos

gradio/ipython_ext.py

@@ -59,32 +59,27 @@ def track(self, demo: gr.Blocks):
 def load_ipython_extension(ipython):
     reloader = JupyterReloader(ipython)
 
-    @magic_arguments()
-    @argument("--demo-name", default="demo", help="Name of gradio blocks instance.")
-    @argument(
+    @magic_arguments()  # type: ignore
+    @argument("--demo-name", default="demo", help="Name of gradio blocks instance.")  # type: ignore
+    @argument(  # type: ignore
         "--share",
         default=False,
         const=True,
         nargs="?",
         help="Whether to launch with sharing. Will slow down reloading.",
     )
-    @register_cell_magic
-    @needs_local_scope
+    @register_cell_magic  # type: ignore
+    @needs_local_scope  # type: ignore
     def blocks(line, cell, local_ns):
         """Launch a demo defined in a cell in reload mode."""
 
-        args = parse_argstring(blocks, line)
+        args = parse_argstring(blocks, line)  # type: ignore
 
         exec(cell, None, local_ns)
         demo: gr.Blocks = local_ns[args.demo_name]
         if not reloader.demo_tracked():
             demo.launch(share=args.share)
             reloader.track(demo)
-        elif reloader.queue_changed(demo):
-            print("Queue got added or removed. Restarting demo.")
-            reloader.running_demo.close()
-            demo.launch()
-            reloader.track(demo)
         else:
             reloader.swap_blocks(demo)
             return reloader.running_demo.artifact

js/app/src/Index.svelte

@@ -318,6 +318,7 @@
 					app.close();
 					app = await Client.connect(api_url, {
 						status_callback: handle_status,
+						with_null_state: true,
 						events: ["data", "log", "status", "render"]
 					});
 

js/app/test/test_chatinterface.reload.spec.ts

@@ -58,9 +58,9 @@ test("gradio dev mode correctly reloads a stateful ChatInterface demo", async ({
 import gradio as gr
 
 def greet(msg, history):
-    return "Hello"
+    return f"You typed: {msg}"
 
-demo = gr.ChatInterface(fn=greet, textbox=gr.Textbox(label="foo"))
+demo = gr.ChatInterface(fn=greet, textbox=gr.Textbox(label="foo", placeholder="Type a message..."))
 
 if __name__ == "__main__":
     demo.launch()
@@ -75,6 +75,17 @@ if __name__ == "__main__":
 			}
 		});
 		await expect(page.getByLabel("foo")).toBeVisible();
+		const textbox = page.getByPlaceholder("Type a message...");
+		const submit_button = page.getByRole("button", { name: "Submit" });
+
+		await textbox.fill("hello");
+		await submit_button.click();
+
+		await expect(textbox).toHaveValue("");
+		const response = page.locator(".bot  p", {
+			hasText: "You typed: hello"
+		});
+		await expect(response).toBeVisible();
 	} finally {
 		if (_process) kill_process(_process);
 	}

pyproject.toml

@@ -104,7 +104,6 @@ exclude = [
   "gradio/themes/",
   "gradio/_frontend_code/",
   "gradio/components/*_plot.py",
-  "gradio/ipython_ext.py",
   "gradio/node/*.py",
   "gradio/_frontend_code/*.py",
 ]