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-rw-r--r--Lib/test/test_string_literals.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/Lib/test/test_string_literals.py b/Lib/test/test_string_literals.py
index 3a3830b..7247b7e 100644
--- a/Lib/test/test_string_literals.py
+++ b/Lib/test/test_string_literals.py
@@ -266,6 +266,13 @@ class TestLiterals(unittest.TestCase):
self.assertRaises(SyntaxError, eval, """ bu'' """)
self.assertRaises(SyntaxError, eval, """ ub'' """)
+ def test_uppercase_prefixes(self):
+ self.assertEqual(eval(""" B'x' """), b'x')
+ self.assertEqual(eval(r""" R'\x01' """), r'\x01')
+ self.assertEqual(eval(r""" BR'\x01' """), br'\x01')
+ self.assertEqual(eval(""" F'{1+1}' """), f'{1+1}')
+ self.assertEqual(eval(r""" U'\U0001d120' """), u'\U0001d120')
+
def check_encoding(self, encoding, extra=""):
modname = "xx_" + encoding.replace("-", "_")
fn = os.path.join(self.tmpdir, modname + ".py")