Adds a simple lazy example.

Author: nrfulton

docs/examples/melp/lazy.py

@@ -0,0 +1,29 @@
+import asyncio
+from mellea.stdlib.span import Span, SimpleComponent
+from mellea.stdlib.base import SimpleContext, Context, CBlock, ModelOutputThunk
+from mellea.backends import Backend
+from mellea.backends.ollama import OllamaModelBackend
+
+backend = OllamaModelBackend("granite4:latest")
+
+
+async def main(backend: Backend, ctx: Context):
+    s1 = CBlock("What is 1+1? Respond with the number only.")
+    s1_out, _ = await backend.generate_from_context(action=s1, ctx=SimpleContext())
+
+    s2 = CBlock("What is 2+2? Respond with the number only.")
+    s2_out, _ = await backend.generate_from_context(action=s2, ctx=SimpleContext())
+
+    sc1 = SimpleComponent(
+        instruction="What is x+y? Respond with the number only", x=s1_out, y=s2_out
+    )
+
+    print(await s1_out.avalue())
+    print(await s2_out.avalue())
+
+    sc1_out, _ = await backend.generate_from_context(action=sc1, ctx=SimpleContext())
+
+    print(await sc1_out.avalue())
+
+
+asyncio.run(main(backend, SimpleContext()))