Stop writing Python 4 incompatible code

[Chris Angelico]

On Fri, Jan 15, 2016 at 2:08 PM, Gregory Ewing
<greg.ewing at canterbury.ac.nz> wrote:
> Steven D'Aprano wrote:
>
>> Maybe Guido will change his mind and we'll have 3.10. 3.11, 3.12, ...
>
>
> Who says that version numbers have to be base 10? After
> 3.9 we could have 3.A, 3.B, ... 3.Z, and then we have
> a long list of Unicode characters to work through before
> we're forced to bump the major number up...

We would have to skip a few - 3.I and 3.O are too confusing, and 3.X
would wreak havoc with people's heads. But then, so would 3.A...

Let's do this. Wreak the havoc. Unleash the folly. Dispel the sanity!

ChrisA