STINNER Victor <[EMAIL PROTECTED]> added the comment: "PEP 352: Exceptions must derive from BaseException. This is the root of the exception hierarchy." I prefer to derive from Exception to be able to use "exept Exception as: ..." which doesn't catch SystemExit nor KeyboardInterrupt.
"PEP 3134: Exception chaining. (The __context__ feature from the PEP hasn’t been implemented yet in 3.0a2.)" The feature is now implemented! "PEP 237: long renamed to int. (...) sys.maxint was also removed since the int type has no maximum value anymore." What about the new sys.maxsize constant? Oh, it's written at the bottom, "Removed sys.maxint. Use sys.maxsize." Both paragraphs should be merged. "Optimizations (...) 33% slower (...) we expect to be optimizing string and integer operations significantly before the final 3.0 release!" I don't expect "significant" changes before the final release. I worked on some patches about the int type (use base 2^30 instead of 2^15, GMP, etc.), but all patches optimize large integer (more than 1 digit, or more than 20 digits) whereas most integers in Python are very small. About str=>unicode, I also don't expect changes. On character in now 4 bytes (or 2 bytes), whereas Python2 used 1 byte. This introduce an overhead. Most functions at C level use an conversion from byte string (ASCII) to Unicode (eg. PyErr_SetString). We should directly use wide string (eg. PyErr_SetWideString?). "Porting to Python 3.0" This section is very small and gives few informations. There is nothing about 2to3 (just two references in the document). I also read somewhere that someone wrote a document explaining how to port a C extension to Python3. What about a link to the "What's new in Python 2.6" document? Most people are still using Python 2.4 or 2.5. And Python3 is Python 2.5 + <changes in Python 2.6> + <changes in Python 3.0)>. ---------- nosy: +haypo _______________________________________ Python tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue2306> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
