From d4233732be20fc4a6f4185490f55d6a85fdcb73e Mon Sep 17 00:00:00 2001
From: Dave Halter <davidhalter88@gmail.com>
Date: Mon, 27 Apr 2026 14:24:23 +0200
Subject: [PATCH] Format unions with | consistently

---
 jedi/inference/compiled/access.py | 24 +++++++++++-------------
 test/test_inference/test_mixed.py |  2 +-
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/jedi/inference/compiled/access.py b/jedi/inference/compiled/access.py
index 7b1fc5b0..8fc2d832 100644
--- a/jedi/inference/compiled/access.py
+++ b/jedi/inference/compiled/access.py
@@ -507,19 +507,17 @@ class DirectObjectAccess:
 
     def _annotation_to_str(self, annotation):
         # In Python 3.14+, Union types are displayed as X | Y instead of Union[X, Y]
-        # We normalize to Union[X, Y] for consistency
-        if sys.version_info >= (3, 8):
-            import typing
-            origin = typing.get_origin(annotation)
-            if origin is typing.Union:
-                # Get the args and format them as Union[...]
-                args = typing.get_args(annotation)
-                formatted_args = ', '.join(
-                    self._annotation_to_str(arg) if hasattr(arg, '__origin__')
-                    else getattr(arg, '__name__', str(arg))
-                    for arg in args
-                )
-                return f'Union[{formatted_args}]'
+        # We normalize to that for consistency
+        import typing
+        origin = typing.get_origin(annotation)
+        if origin is typing.Union:
+            # Get the args and format them as Union[...]
+            args = typing.get_args(annotation)
+            return ' | '.join(
+                self._annotation_to_str(arg) if hasattr(arg, '__origin__')
+                else getattr(arg, '__name__', str(arg))
+                for arg in args
+            )
         return inspect.formatannotation(annotation)
 
     def get_signature_params(self):
diff --git a/test/test_inference/test_mixed.py b/test/test_inference/test_mixed.py
index 479a4bbf..08199187 100644
--- a/test/test_inference/test_mixed.py
+++ b/test/test_inference/test_mixed.py
@@ -111,4 +111,4 @@ def test_compiled_signature_annotation_string():
 
     s, = jedi.Interpreter('func()', [locals()]).get_signatures(1, 5)
     assert s.params[0].description == 'param x: Type'
-    assert s.params[1].description == 'param y: Union[Type, int]'
+    assert s.params[1].description == 'param y: Type | int'