diff options
Diffstat (limited to 'Doc/whatsnew/3.5.rst')
| -rw-r--r-- | Doc/whatsnew/3.5.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.5.rst b/Doc/whatsnew/3.5.rst index c309aa8..f7b9a83 100644 --- a/Doc/whatsnew/3.5.rst +++ b/Doc/whatsnew/3.5.rst @@ -482,6 +482,13 @@ Changes in the Python API simply define :meth:`~importlib.machinery.Loader.create_module` to return ``None`` (:issue:`23014`). +* :func:`re.split` always ignored empty pattern matches, so the ``'x*'`` + pattern worked the same as ``'x+'``, and the ``'\b'`` pattern never worked. + Now :func:`re.split` raises a warning if the pattern could match + an empty string. For compatibility use patterns that never match an empty + string (e.g. ``'x+'`` instead of ``'x*'``). Patterns that could only match + an empty string (such as ``'\b'``) now raise an error. + Changes in the C API -------------------- |