2to3 fixers for Zope
Fixers for Zope Component Architecture and the frameworks built with it.
Currently, there is only one fixer, fix_implements. This fixer will change all uses of implements(IFoo) in a class body to the class decorator @implementer(IFoo), which is the most likely Python 3 syntax for zope.interfaces implements statements.
Typically you will use zope.fixers together with Distribute’s 2to3 support. This is done by adding zope.fixers to some parameters in setup():
>>> setup( ... install_requires = ['zope.fixers'], ... use_2to3 = True, ... use_2to3_fixers = ['zope.fixers'], ... )
For an example usage of a complex case, look at:
That setup.py supports both distutils, setuptools and distribute, all versions of python from 2.4 to 3.1, and has an optional C-extension, so don’t worry if it’s overwhelming. For simple projects all you need is to use Distribute and add the above three lines to the setup.py. Distribute has more documentation on how to use it to support Python 3 porting.
If you don’t want to use Distribute things get a bit more complex, as you have to make the list of fixers yourself and call lib2to3 with that:
>>> from lib2to3.refactor import RefactoringTool, get_fixers_from_package >>> fixers = get_fixers_from_package('lib2to3.fixes') + \ ... get_fixers_from_package('zope.fixers')
And the run the fixing with the fixers:
>>> tool = RefactoringTool(fixers) >>> tool.refactor(files, write=True)
The package also provides a console script called zope-2to3 that has the same arguments as 2to3 but applies the fixers defined in this package.
- Removed setup.cfg and make sure that we point to real Change Log.
- Remove support for Python 2.7 again. It did not work.
- Added console script zope-2to3.
- Initial release. Includes the implements fix to change implements(IFoo) class body call to @implementer(IFoo) class decorator.
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