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-rw-r--r--Lib/test/test_unicode.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 6a646a0..6680f74 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -943,6 +943,8 @@ class UnicodeTest(string_tests.CommonTest,
self.assertEqual("{0:.0s}".format("ABC\u0410\u0411\u0412"),
'')
+ self.assertEqual("{[{}]}".format({"{}": 5}), "5")
+
def test_format_map(self):
self.assertEqual(''.format_map({}), '')
self.assertEqual('a'.format_map({}), 'a')