1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/asyncore.py b/Lib/asyncore.py
index 705e406..f17b31a 100644
--- a/Lib/asyncore.py
+++ b/Lib/asyncore.py
@@ -60,6 +60,10 @@ from errno import EALREADY, EINPROGRESS, EWOULDBLOCK, ECONNRESET, EINVAL, \
 _DISCONNECTED = frozenset({ECONNRESET, ENOTCONN, ESHUTDOWN, ECONNABORTED, EPIPE,
                            EBADF})
 
+warnings.warn(
+    'asyncore module is deprecated in 3.6. Use asyncio instead.',
+    PendingDeprecationWarning, stacklevel=2)
+
 try:
     socket_map
 except NameError: