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# Chatbot / Stream
# Use this card for chatbot interactions, supports text streaming.
# #chatbot #stream
# ---
from h2o_wave import main, app, Q, ui, data
@app('/demo')
async def serve(q: Q):
if not q.client.initialized:
# Use list buffer to allow easy streaming. Must have exactly 2 fields - content and from_user.
q.page['example'] = ui.chatbot_card(box='1 1 5 5', data=data(fields='content from_user', t='list'), name='chatbot')
q.client.initialized = True
# A new message arrived.
if q.args.chatbot:
# Append user message.
q.page['example'].data += [q.args.chatbot, True]
# Append bot response.
q.page['example'].data += ['', False]
# Stream bot response.
stream = ''
for w in 'I am a fake chatbot. Sorry, I cannot help you.'.split():
await q.sleep(0.1)
stream += w + ' '
q.page['example'].data[-1] = [stream, False]
await q.page.save()
await q.page.save()
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