Add demo code from docs/getting-started.md

And update .gitignore to ignore demo/env and database files anywhere.

Author: gvanrossum-ms

.gitignore

@@ -3,15 +3,16 @@ __pycache__
 /.env
 /.ui_history
 /.venv
-/db
-/*.db
+*.db
+*.db.index_log
 /evals
 /gmail/client_secret.json
 /gmail/token.json
 *_dump/
 /testdata/Episode_53_Answer_results.json
 /testdata/Episode_53_Search_results.json
 /testdata/MP/
+/demo/env
 
 # VSCode
 .vscode

demo/demo.py

@@ -0,0 +1,34 @@
+from typeagent import create_conversation
+from typeagent.transcripts.transcript import (
+    TranscriptMessage,
+    TranscriptMessageMeta,
+)
+
+
+def read_messages(filename) -> list[TranscriptMessage]:
+    messages: list[TranscriptMessage] = []
+    with open(filename, "r") as f:
+        for line in f:
+            # Parse each line into a TranscriptMessage
+            speaker, text_chunk = line.split(None, 1)
+            message = TranscriptMessage(
+                text_chunks=[text_chunk],
+                metadata=TranscriptMessageMeta(speaker=speaker),
+            )
+            messages.append(message)
+    return messages
+
+
+async def main():
+    conversation = await create_conversation("demo.db", TranscriptMessage)
+    messages = read_messages("transcript.txt")
+    print(f"Indexing {len(messages)} messages...")
+    results = await conversation.add_messages_with_indexing(messages)
+    print(f"Indexed {results.messages_added} messages.")
+    print(f"Got {results.semrefs_added} semantic refs.")
+
+
+if __name__ == "__main__":
+    import asyncio
+
+    asyncio.run(main())

demo/query.py

@@ -0,0 +1,16 @@
+from typeagent import create_conversation
+from typeagent.transcripts.transcript import TranscriptMessage
+
+
+async def main():
+    conversation = await create_conversation("demo.db", TranscriptMessage)
+    question = "Who volunteered to do the python library?"
+    print("Q:", question)
+    answer = await conversation.query(question)
+    print("A:", answer)
+
+
+if __name__ == "__main__":
+    import asyncio
+
+    asyncio.run(main())

demo/transcript.txt

@@ -0,0 +1,3 @@
+STEVE We should really make a Python library for Structured RAG.
+UMESH Who would be a good person to do the Python library?
+GUIDO I volunteer to do the Python library. Give me a few months.