Issue #19849: selectors: Document the possibility of early select() wakeup upon
EINTR.
diff --git a/Doc/library/selectors.rst b/Doc/library/selectors.rst
index 44835fa..b0b002f 100644
--- a/Doc/library/selectors.rst
+++ b/Doc/library/selectors.rst
@@ -150,6 +150,11 @@
object.
*events* is a bitmask of events ready on this file object.
+ .. note::
+ This method can return before any file object becomes ready or the
+ timeout has elapsed if the current process receives a signal: in this
+ case, an empty list will be returned.
+
.. method:: close()
Close the selector.