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author | Guido van Rossum <guido@python.org> | 1997-11-26 17:37:31 (GMT) |
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committer | Guido van Rossum <guido@python.org> | 1997-11-26 17:37:31 (GMT) |
commit | 66d010ab3cf3d2f9f3d50b6f8459a2d82312918c (patch) | |
tree | 1d3ea35ba664a1d57736ff68274c118296fb543e /README | |
parent | 647738002c6b37909cd3fd667e869a1a92f332d5 (diff) | |
download | cpython-66d010ab3cf3d2f9f3d50b6f8459a2d82312918c.zip cpython-66d010ab3cf3d2f9f3d50b6f8459a2d82312918c.tar.gz cpython-66d010ab3cf3d2f9f3d50b6f8459a2d82312918c.tar.bz2 |
Reordered and slightly edited the highlights of changes.
Diffstat (limited to 'README')
-rw-r--r-- | README | 100 |
1 files changed, 53 insertions, 47 deletions
@@ -4,51 +4,25 @@ This is Python release 1.5 beta 1 What's new in this release? --------------------------- -Too much has changed to list it all here. There's a loooong list of -changes since release 1.4 in the file Misc/NEWS. If you were an alpha -tester, the list of changes since 1.5a4 is presented at the end of -that file. - -Most relevant changes since 1.5a4 (of course all known bugs have been -fixed, leaks plugged, and documentation has been added): - - - Package directories now *require* the presence of __init__.py. - Packages can now contain shared libraries. - - - New module 'fileinput' to iterate over the lines of a list of files. - - - New module 'locale' for localized number formatting and string case - sensitivity. - - - New module 'xmllib' to parse XML files. - - - Some more support for Tk extensions (PIL, TIX, BLT, TOGL). - - - Fixed address list parsing in module 'rfc822'. - - - More deployment (and only one fix) for the 're' module. - - - New Python mode for Emacs. - - - OS/2 support. - -Other important changes, if this is the first release you see since -1.4: +There's a loooong list of changes since release 1.4 in the file +Misc/NEWS. Some highlights: - It's much faster (almost twice for the Lib/test/pystone.py benchmark.) - - There's an assert statement: assert <condition> or - assert <condition>, <errormessage>. It raises AssertionError if the - condition evaluates to false. + - There is now an assert statement: ``assert <condition>'' or + ``assert <condition>, <errormessage>''. It raises AssertionError if + the condition evaluates to false. The default error message is + empty; the source text of the assertion statement is printed as part + of the traceback. - There is now built-in support for importing hierarchical module names (e.g. "import spam.ham.eggs"); ni is declared obsolete. Note that the built-in package support is somewhat simpler (no __ and - __domain__) and differs in one crucial aspect: __init__.py is loaded - in the package's namespace instead of as a submodule. See - http://grail.cnri.reston.va.us/python/essays/packages.html - for more info. + __domain__) and differs in one crucial aspect: __init__.py is + required, and loaded in the package's namespace instead of as a + submodule. For more information, see + http://grail.cnri.reston.va.us/python/essays/packages.html. - The new "re" module (Perl style regular expressions) is here. It is based on Philip Hazel's pcre code; the Python interfaces were put @@ -63,26 +37,32 @@ Other important changes, if this is the first release you see since http://grail.cnri.reston.va.us/python/essays/stdexceptions.html for more info. - - Comparisons can now raise exceptions. + - Comparisons can now raise exceptions (previously, exceptions + occuring during comparisons were swept under the rug). - - New dictionary methods: .clear(), .update(), .copy(), .get(). + - New dictionary methods: .clear(), .copy(), .update(), .get(). The + first two are obvious; d1.update(d2) is equivalent to the for loop + ``for k in d2.keys(): d1[k] = d2[k]''; and d.get(k) returns d[k] if + it exists and None (or the optional second argument) if not. - - New regression test harness tests more. + - There is a new regression test harness, which tests many more + modules. (To run the tests, do "import tes.autotest".) - - It's much smarter about the initial value for sys.path; you can - control it easier using $PYTHONHOME (see the usage message, e.g. try - ``python -h''). In most situations, the interpreter can be - installed at an arbitrary location without having to recompile. + - The interpreter is much smarter about the initial value for + sys.path; you can control it easier using $PYTHONHOME (see the usage + message, e.g. try ``python -h''). In most situations, the + interpreter can be installed at an arbitrary location without having + to recompile. - The build process now builds a single library (libpython1.5.a) which contains everything except for the main() entry point. This makes life much easier for applications that embed Python. - - Much better support for embedding, including threads, multiple - interpreters(!), uninitialization, and access to the global + - There is much better support for embedding, including threads, + multiple interpreters(!), uninitialization, and access to the global interpreter lock. - - There's a -O option that removes SET_LINENO instructions, assert + - There is a -O option that removes SET_LINENO instructions, assert statements and code prefixed with ``if __debug__: ...''. (It still only makes a few percent difference, so don't get all worked up about this.) @@ -91,6 +71,32 @@ Other important changes, if this is the first release you see since defined by Python now have a "Py" or "_Py" prefix, and the same is true for most macros and typedefs. +If you were an alpha tester, here are the most relevant changes since +1.5a4 (of course all known bugs have been fixed, leaks plugged, and +some documentation has been added). The full list of changes since +1.5a4 is presented at the end of the Misc/NEWS file. + + - Package directories now *require* the presence of __init__.py (or + .pyc/.pyo as applicable). Packages can now contain shared + library modules. + + - New module 'fileinput' to iterate over the lines of a list of files. + + - New module 'locale' for localized number formatting and string case + sensitivity. + + - New module 'xmllib' to parse XML files. + + - Some more support for Tk extensions (PIL, TIX, BLT, TOGL). + + - Fixed address list parsing in module 'rfc822'. + + - More deployment (and only one fix) for the 're' module. + + - New Python mode for Emacs. + + - OS/2 support. + If you don't read instructions ------------------------------ |