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 44835fa3374c7ea26cc02bb75ef1667455a3e0eb..b0b002f0e1827313a9558dc57815a42c0db54ee3 100644 (file)
--- a/Doc/library/selectors.rst
+++ b/Doc/library/selectors.rst
@@ -150,6 +150,11 @@ below:
       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.