espnet3.demo.app_builder.build_demo_app

source

espnet3.demo.app_builder.build_demo_app(demo_dir: Path) → Blocks

Build a Gradio demo app from a demo directory.

This loads demo.yaml from demo_dir, builds an inference runtime, and constructs a Gradio UI based on the config (or system defaults).

• Parameters:demo_dir (Path) – Directory containing demo.yaml (and optional assets).
• Returns: A configured Gradio Blocks app instance.
• Return type: gr.Blocks
• Raises:
  • FileNotFoundError – If demo.yaml cannot be found under demo_dir.
  • ValueError – If UI config is missing and no system defaults are available.

Example

>>> import gradio as gr
>>> from pathlib import Path
>>> app = build_demo_app(Path("exp/demo"))
>>> isinstance(app, gr.Blocks)
True
>>> # app.launch()  # run the UI