gh-141174: Test `type_repr()` of `Template` with invalid syntax in `Interpolation` (#155661)

https://github.com/python/cpython/commit/5cc9e466b02858d667fddb885b521ab2029c6e36
commit: 5cc9e466b02858d667fddb885b521ab2029c6e36
branch: main
author: dr-carlos <[email protected]>
committer: JelleZijlstra <[email protected]>
date: 2026-08-13T14:18:35Z
summary:

gh-141174: Test `type_repr()` of `Template` with invalid syntax in `Interpolation` (#155661)

Test `type_repr()` of `Template` with invalid syntax in `Interpolation`

files:
M Lib/test/test_annotationlib.py

diff --git a/Lib/test/test_annotationlib.py b/Lib/test/test_annotationlib.py
index 23d31b05efea2a..530114161701b5 100644
--- a/Lib/test/test_annotationlib.py
+++ b/Lib/test/test_annotationlib.py
@@ -1881,6 +1881,10 @@ def nested():
             type_repr(Template("hi", Interpolation(42, "   "))),
             "Template('hi', Interpolation(42, '   ', None, ''))",
         )
+        self.assertEqual(
+            type_repr(Template("hi", Interpolation(42, "4!2"))),
+            "Template('hi', Interpolation(42, '4!2', None, ''))",
+        )
         # gh138558: perhaps in the future, we can improve this behavior:
         self.assertEqual(type_repr(Template(Interpolation(42, "99"))), "t'{99}'")
 

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