[Zope-dev] zope.interface 4.0.0 considered annoying.

[Brian Sutherland]

On Sun, May 20, 2012 at 12:08:14AM -0400, Tres Seaver wrote:
> On 05/19/2012 07:23 PM, Jim Fulton wrote:
> > On Sat, May 19, 2012 at 5:59 PM, Tres Seaver <tseaver at 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.
> 
> I will release a 4.0.1 silencing the warnings unless somebody speaks up
> in their favor.

+1 to silencing the warnings under Python 2

-- 
Brian Sutherland