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It seems that the Py3k "bytes" will be immutable (just like the Python 2.x "str"), and a "buffer" type will be mutable. Just see the new PEP 3137
Update: Do you know of any other migration initiative? Please, tell me!
At ArsTechnica, in "Open Ended", Ryn Paul talks about Python 3.0 first alpha. He shows an install trouble he had (I'm almost sure he is not using make altinstall), and focuses the rest of his article on Python 3.0 new string formatting features (more about it in the new ReST docs).
I like the way PEP 3101 is now: the formatting language is only complex when you want to do complex things :), and we dont need a complete programming language inside strings.
I hope a 2to3 fixer could translate the most commom uses of %-interpolation to .format(), but I'm not sure that old-style interpolation will be removed from Py3k. For an example, if the string on the left is not a literal, it is not possible to translate with a 2to3 fixer.
As announced by GvR:
The release is available from http://python.org/download/releases/3.0/
I'll send a longer announcement to python-list and python-announce-list. Please blog about this if you have a blog!
Thanks to all who helped out! It's been a great ride.
I will write more about Python 3.0 soon.
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
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