[Python-Dev] API deprecations in Python 3, from a Python 2 perspective

[Eric Smith]

On 03/17/2011 03:08 PM, Jesus Cea wrote:
> I would suggest to keep deprecating things in 3.x, BUT keeping the
> deprecated stuff around (maybe reimplementing them using the new stuff)
> until we decide is safe to axe it, instead of the regular 3.x
> deprecates, 3.(x+1) cleans up.

At some point, didn't we say PendingDeprecationWarning in version x, 
DeprecationWarning in x+1, and removal in x+2? That's what I've been 
doing, but it's not what PEP 5 says.

Removing in x+2 would lengthen the timeframe, although I agree with 
Guido that we should be extra careful for the next several years because 
of people moving directory from 2.7 to (say) 3.5.

Eric.