python backward incompatibilities

[Peter Hansen]

David Goodger wrote:
> [Peter Maas]
> 
>> I tried to find a comprehensive list of Python backward incompatibilities
>> without success. What is the fastest way to compile such a list
>> (with code examples / expected results)? Thanks for your hints.
> 
> PEP 290 would be a good start:
> http://www.python.org/peps/pep-0290.html

In addition, read AMK's "What's New" pages and inverting
might be a good next step: http://www.amk.ca/python/
(I'm pretty sure he noted each real backwards incompatibility
as the new releases came out.)

-Peter