Issue #13703: add a way to randomize the hash values of basic types (str, bytes, datetime)
in order to make algorithmic complexity attacks on (e.g.) web apps much more complicated.
The environment variable PYTHONHASHSEED and the new command line flag -R control this
behavior.
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index 6f874b6..7ded851 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -1265,6 +1265,8 @@
inheritance of :meth:`__hash__` will be blocked, just as if :attr:`__hash__`
had been explicitly set to :const:`None`.
+ See also the :option:`-R` command-line option.
+
.. method:: object.__bool__(self)