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| author | Serhiy Storchaka <storchaka@gmail.com> | 2014-10-10 08:06:31 (GMT) |
|---|---|---|
| committer | Serhiy Storchaka <storchaka@gmail.com> | 2014-10-10 08:06:31 (GMT) |
| commit | 7438e4b56fa6a34a021f11e1220331e841419b96 (patch) | |
| tree | 5adea0024d47e6816a9e771423e247faeffab0f6 /Lib/test/test_re.py | |
| parent | 365e28238f3ccde7f9024a37c212381746748d54 (diff) | |
| download | cpython-7438e4b56fa6a34a021f11e1220331e841419b96.zip cpython-7438e4b56fa6a34a021f11e1220331e841419b96.tar.gz cpython-7438e4b56fa6a34a021f11e1220331e841419b96.tar.bz2 | |
Issue 1519638: Now unmatched groups are replaced with empty strings in re.sub()
and re.subn().
Diffstat (limited to 'Lib/test/test_re.py')
| -rw-r--r-- | Lib/test/test_re.py | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py index e5ad6cb..0e4fa88 100644 --- a/Lib/test/test_re.py +++ b/Lib/test/test_re.py @@ -225,9 +225,11 @@ class ReTests(unittest.TestCase): self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<a a>', 'xx') self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<>', 'xx') self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<1a1>', 'xx') + self.assertRaises(re.error, re.sub, '(?P<a>x)', r'\g<2>', 'xx') + self.assertRaises(re.error, re.sub, '(?P<a>x)', r'\2', 'xx') self.assertRaises(IndexError, re.sub, '(?P<a>x)', '\g<ab>', 'xx') - self.assertRaises(re.error, re.sub, '(?P<a>x)|(?P<b>y)', '\g<b>', 'xx') - self.assertRaises(re.error, re.sub, '(?P<a>x)|(?P<b>y)', '\\2', 'xx') + self.assertEqual(re.sub('(?P<a>x)|(?P<b>y)', r'\g<b>', 'xx'), '') + self.assertEqual(re.sub('(?P<a>x)|(?P<b>y)', r'\2', 'xx'), '') self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<-1>', 'xx') # New valid/invalid identifiers in Python 3 self.assertEqual(re.sub('(?P<µ>x)', r'\g<µ>', 'xx'), 'xx') @@ -439,6 +441,10 @@ class ReTests(unittest.TestCase): "first second") .expand(r"\2 \1 \g<second> \g<first>"), "second first second first") + self.assertEqual(re.match("(?P<first>first)|(?P<second>second)", + "first") + .expand(r"\2 \g<second>"), + " ") def test_repeat_minmax(self): self.assertIsNone(re.match("^(\w){1}$", "abc")) |