Create app.py

app.py

@@ -0,0 +1,57 @@
+import time
+import gradio as gr
+import atexit
+import pathlib
+
+log_file = (pathlib.Path(__file__).parent / "cancel_events_output_log.txt").resolve()
+
+def fake_diffusion(steps):
+    log_file.write_text("")
+    for i in range(steps):
+        print(f"Current step: {i}")
+        with log_file.open("a") as f:
+            f.write(f"Current step: {i}\n")
+        time.sleep(0.2)
+        yield str(i)
+
+
+def long_prediction(*args, **kwargs):
+    time.sleep(10)
+    return 42
+
+
+with gr.Blocks() as demo:
+    with gr.Row():
+        with gr.Column():
+            n = gr.Slider(1, 10, value=9, step=1, label="Number Steps")
+            run = gr.Button(value="Start Iterating")
+            output = gr.Textbox(label="Iterative Output")
+            stop = gr.Button(value="Stop Iterating")
+        with gr.Column():
+            textbox = gr.Textbox(label="Prompt")
+            prediction = gr.Number(label="Expensive Calculation")
+            run_pred = gr.Button(value="Run Expensive Calculation")
+        with gr.Column():
+            cancel_on_change = gr.Textbox(label="Cancel Iteration and Expensive Calculation on Change")
+            cancel_on_submit = gr.Textbox(label="Cancel Iteration and Expensive Calculation on Submit")
+            echo = gr.Textbox(label="Echo")
+    with gr.Row():
+        with gr.Column():
+            image = gr.Image(sources=["webcam"], label="Cancel on clear", interactive=True)
+        with gr.Column():
+            video = gr.Video(sources=["webcam"], label="Cancel on start recording", interactive=True)
+
+    click_event = run.click(fake_diffusion, n, output)
+    stop.click(fn=None, inputs=None, outputs=None, cancels=[click_event])
+    pred_event = run_pred.click(fn=long_prediction, inputs=[textbox], outputs=prediction)
+
+    cancel_on_change.change(None, None, None, cancels=[click_event, pred_event])
+    cancel_on_submit.submit(lambda s: s, cancel_on_submit, echo, cancels=[click_event, pred_event])
+    image.clear(None, None, None, cancels=[click_event, pred_event])
+    video.start_recording(None, None, None, cancels=[click_event, pred_event])
+
+    demo.queue(max_size=20)
+    atexit.register(lambda: log_file.unlink())
+
+if __name__ == "__main__":
+    demo.launch()