Add an example of interoperability between Trollius and asyncio

1 files changed, 51 insertions, 0 deletions

diff --git a/examples/interop_asyncio.py b/examples/interop_asyncio.py
new file mode 100644
index 0000000..a0cbc3f
--- /dev/null
+++ b/examples/interop_asyncio.py
@@ -0,0 +1,51 @@
+import asyncio
+import trollius
+
+@asyncio.coroutine
+def asyncio_noop():
+    pass
+
+@asyncio.coroutine
+def asyncio_coroutine(coro):
+    print("asyncio coroutine")
+    res = yield from coro
+    print("asyncio inner coroutine result: %r" % (res,))
+    print("asyncio coroutine done")
+    return "asyncio"
+
+@trollius.coroutine
+def trollius_noop():
+    pass
+
+@trollius.coroutine
+def trollius_coroutine(coro):
+    print("trollius coroutine")
+    res = yield trollius.From(coro)
+    print("trollius inner coroutine result: %r" % (res,))
+    print("trollius coroutine done")
+    raise trollius.Return("trollius")
+
+def main():
+    # create an event loop for the main thread: use Trollius event loop
+    loop = trollius.get_event_loop()
+
+    # set the asyncio event loop (for the main thread)
+    asyncio.set_event_loop(loop)
+
+    print("[ asyncio coroutine called from trollius coroutine ]")
+    coro1 = asyncio_noop()
+    coro2 = asyncio_coroutine(coro1)
+    res = loop.run_until_complete(trollius_coroutine(coro2))
+    print("trollius coroutine result: %r" % res)
+    print("")
+
+    print("[ asyncio coroutine called from trollius coroutine ]")
+    coro1 = trollius_noop()
+    coro2 = trollius_coroutine(coro1)
+    res = loop.run_until_complete(asyncio_coroutine(coro2))
+    print("asyncio coroutine result: %r" % res)
+    print("")
+
+    loop.close()
+
+main()