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-rw-r--r--Lib/test/test_re.py11
1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index e90c770..8bc74a2 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -3,6 +3,7 @@ from test.support import verbose, run_unittest, gc_collect, bigmemtest, _2G, \
import io
import re
from re import Scanner
+import sre_constants
import sys
import string
import traceback
@@ -1029,6 +1030,16 @@ class ReTests(unittest.TestCase):
self.assertRaises(OverflowError, re.compile, r".{,%d}" % MAXREPEAT)
self.assertRaises(OverflowError, re.compile, r".{%d,}?" % MAXREPEAT)
+ def test_backref_group_name_in_exception(self):
+ # Issue 17341: Poor error message when compiling invalid regex
+ with self.assertRaisesRegex(sre_constants.error, '<foo>'):
+ re.compile('(?P=<foo>)')
+
+ def test_group_name_in_exception(self):
+ # Issue 17341: Poor error message when compiling invalid regex
+ with self.assertRaisesRegex(sre_constants.error, '\?foo'):
+ re.compile('(?P<?foo>)')
+
def run_re_tests():
from test.re_tests import tests, SUCCEED, FAIL, SYNTAX_ERROR