gh-82626: Schedule removal of bool used as file descriptor

Author: vstinner

Doc/deprecations/pending-removal-in-3.18.rst

@@ -1,6 +1,9 @@
 Pending removal in Python 3.18
 ------------------------------
 
+* No longer accept a boolean value when a file descriptor is expected.
+  (Contributed by Serhiy Storchaka in :gh:`82626`.)
+
 * :mod:`decimal`:
 
   * The non-standard and undocumented :class:`~decimal.Decimal` format