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Project Description

This is a Python 2.6 backport of the Python 3.4 ipaddress module.

Please refer to the official Python 3.4 documentation for more information on the module.

Changes from Python 3.4’s ipaddress module

Since Python 2 has no distinct bytes type, bytearray is used instead for the “packed” address representation. Additionally, since Python 2.7’s functools does not have Python 3.2’s lru_cache, no caching is performed for the is_private and is_global properties; this should be a minor problem as Python 3.3’s ipaddress did not use lru_cache either. The backport should behave identical to 3.4 in all other respects.

Changes from py2-ipaddress 3.4

Python 2.6 support and a bugfix.

Changes from py2-ipaddress 2.0.1 and earlier

Since Python 2 does not distinguish between bytes and str like Python 3 does, version 2.0.1 and earlier of py2-ipaddress attempted to interpret str arguments as _both_ and do the “right” thing.

This unfortunately led to surprising behavior in py2-ipaddress:

>>> ipaddress.ip_address('test.example.org')
IPv6Address('7465:7374:2e65:7861:6d70:6c65:2e6f:7267')

The ipaddress module does not, of course, perform DNS resolution. Rather, the argument is interpreted as a byte string (of length 16) and converted bit-for-bit into an IPv6 address. In Python 3, ipaddress correctly rejects such a constructor argument (unless the b prefix is used to explicitly mark the literal as a byte string).

Even worse, there is not always a single right interpretation. Python 3 example:

>>> ipaddress.ip_address('::1234:5678:9abc')
IPv6Address('::1234:5678:9abc')
>>> ipaddress.ip_address(b'::1234:5678:9abc')
IPv6Address('3a3a:3132:3334:3a35:3637:383a:3961:6263')

There is no way to distinguish the two invocations in Python 2. As a result, py2-ipaddress 3.4 uses bytearray for all byte strings, and str for text strings only:

>>> ipaddress.ip_address('::1234:5678:9abc')
IPv6Address('::1234:5678:9abc')
>>> ipaddress.ip_address(b'::1234:5678:9abc')
IPv6Address('::1234:5678:9abc')
>>> ipaddress.ip_address(bytearray('::1234:5678:9abc'))
IPv6Address('3a3a:3132:3334:3a35:3637:383a:3961:6263')

License

The ipaddress modules (both the original and this backport) are licensed under the Python Software Foundation License version 2.

The modifications made for Python 2.6 compatibility are hereby released into the public domain by the authors.

Release History

Release History

3.4.1

This version

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3.4

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2.0.1

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2.0

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1.0

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Download Files

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TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
py2-ipaddress-3.4.1.tar.gz (17.9 kB) Copy SHA256 Checksum SHA256 Source May 11, 2015

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