bpo-36144: Document PEP 584 (GH-18659)

1 files changed, 16 insertions, 0 deletions

diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 47d64f1e8d..435ba5b74f 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -4392,6 +4392,22 @@ pairs within braces, for example: ``{'jack': 4098, 'sjoerd': 4127}`` or ``{4098:
          >>> d.values() == d.values()
          False
 
+   .. describe:: d | other
+
+      Create a new dictionary with the merged keys and values of *d* and
+      *other*, which must both be dictionaries. The values of *other* take
+      priority when *d* and *other* share keys.
+
+      .. versionadded:: 3.9
+
+   .. describe:: d |= other
+
+      Update the dictionary *d* with keys and values from *other*, which may be
+      either a :term:`mapping` or an :term:`iterable` of key/value pairs. The
+      values of *other* take priority when *d* and *other* share keys.
+
+      .. versionadded:: 3.9
+
    Dictionaries compare equal if and only if they have the same ``(key,
    value)`` pairs (regardless of ordering). Order comparisons ('<', '<=', '>=', '>') raise
    :exc:`TypeError`.