[Python-Dev] [Python-3000] Warning for 2.6 and greater

[glyph at divmod.com]

On 11:22 am, anthony at interlink.com.au wrote:

>> FWIW, I also agree with James that Python 3 shouldn't even be
>> released until the 2.x series has reached parity with its feature
>> set.  However, if there's continuity in the version numbers
>> instead of the release dates, I can at least explain to Twisted
>> users that we will _pretend_ they are released in the order of
>> their versions.
>
>I'm not sure what "parity with it's feature set" means.

I don't either!  "Parity with it is feature set"?  I can't even parse that!  ;-)

By "parity with *its* feature set", though, I meant what you said here:

>I do hope that it's _possible_ to work in a version of the language that works in both 2.6+ and 3.0+, even if under the hood there are differences.

In order to do this, everything that has been changed in 3.0 has to have some mechanism for working both ways in some 2.x release.  I phrased this as its "feature set" because I am not aware of any new functionality in 3.0 that simply isn't available 2.x - everything I've seen are "cleanups", which expose basically the same features as 2.5.

If there are some real new features, then I am in error.
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