bpo-36144: OrderedDict Union (PEP 584) (#18967)

1 files changed, 18 insertions, 0 deletions

diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
index 1aa7d10..18255da 100644
--- a/Lib/collections/__init__.py
+++ b/Lib/collections/__init__.py
@@ -293,6 +293,24 @@ class OrderedDict(dict):
             return dict.__eq__(self, other) and all(map(_eq, self, other))
         return dict.__eq__(self, other)
 
+    def __ior__(self, other):
+        self.update(other)
+        return self
+
+    def __or__(self, other):
+        if not isinstance(other, dict):
+            return NotImplemented
+        new = self.__class__(self)
+        new.update(other)
+        return new
+
+    def __ror__(self, other):
+        if not isinstance(other, dict):
+            return NotImplemented
+        new = self.__class__(other)
+        new.update(self)
+        return new
+
 
 try:
     from _collections import OrderedDict