2012/5/20 Tres Seaver <tsea...@palladion.com>: > On 05/19/2012 07:23 PM, Jim Fulton wrote: >> On Sat, May 19, 2012 at 5:59 PM, Tres Seaver <tsea...@palladion.com> >> wrote: >>> On 05/19/2012 12:12 PM, Jim Fulton wrote: >>>> The declaration-syntax warnings in the zope.interface 4.0.0 are >>>> annoying and mostly pointless. >>>> >>>> There will be enough pain in porting applications to Python 3, >>>> avoiding the surprise of having to use a different >>>> interface-declaration syntax will not be of any consequence. >>>> >>>> While the deprecation warning may provide some tiny benefit, the >>>> annoyance, especially for applications or libraries that still >>>> support Python 2.5 far outweights the benefit. >>> >>> We're in an odd spot: the Python3 support for zope.interface >>> mostly works, but the class advice bits (implements, >>> implementsOnly, classProvides) fail silently under Python3 before >>> 4.0.0: they literally have no effect due to changes in class >>> initialization machinery. zope.interface 4.0.0 changes those silent >>> failures into exceptions (which is what I thought you were going to >>> complain about). >> >> I'd forgotten the fail silently bit. Can't we make the fail loudly >> for Python 3? > > They already do: 4.0.0 makes them exceptions under Python3: that fact > was actually my rationale for the warnings under Python2, to allow folks > to find and remediate them before porting.
If they are exceptions under Python 3, developers will get them and have to fix when porting to Python 3. There is a lot of other work to be done at the same time. But under Python 2, implements and friends continue to work, so the warnings are very annoying. > I will release a 4.0.1 silencing the warnings unless somebody speaks up > in their favor. Please, only warn on Python 3. -- Gediminas Paulauskas _______________________________________________ Zope-Dev maillist - Zope-Dev@zope.org https://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - https://mail.zope.org/mailman/listinfo/zope-announce https://mail.zope.org/mailman/listinfo/zope )
