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Diffstat (limited to 'Doc/whatsnew/3.9.rst')
| -rw-r--r-- | Doc/whatsnew/3.9.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst index 9a7f2cd..772fb5a 100644 --- a/Doc/whatsnew/3.9.rst +++ b/Doc/whatsnew/3.9.rst @@ -537,6 +537,10 @@ Scoped IPv6 addresses can be parsed using :class:`ipaddress.IPv6Address`. If present, scope zone ID is available through the :attr:`~ipaddress.IPv6Address.scope_id` attribute. (Contributed by Oleksandr Pavliuk in :issue:`34788`.) +Starting with Python 3.9.5 the :mod:`ipaddress` module no longer +accepts any leading zeros in IPv4 address strings. +(Contributed by Christian Heimes in :issue:`36384`). + math ---- @@ -1114,6 +1118,14 @@ Changes in the Python API compatible classes that don't inherit from those mentioned types. (Contributed by Roger Aiudi in :issue:`34775`). +* Starting with Python 3.9.5 the :mod:`ipaddress` module no longer + accepts any leading zeros in IPv4 address strings. Leading zeros are + ambiguous and interpreted as octal notation by some libraries. For example + the legacy function :func:`socket.inet_aton` treats leading zeros as octal + notatation. glibc implementation of modern :func:`~socket.inet_pton` does + not accept any leading zeros. + (Contributed by Christian Heimes in :issue:`36384`). + * :func:`codecs.lookup` now normalizes the encoding name the same way as :func:`encodings.normalize_encoding`, except that :func:`codecs.lookup` also converts the name to lower case. For example, ``"latex+latin1"`` encoding |