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Comment by mhashemi | Hacker News Reader

That's a pretty coarse description of the Python concurrency landscape. "things are moving away"?

For one, there was never really official Python backing for gevent and other coroutine-oriented programming models. Remember asyncore? From our standpoint, Python 2.7 continues to be the industry standard, and we'll continue to target it for the foreseeable future. Should some major internal or open-source use case come along and make it advantageous for us to target Python 3, we would approach it like any other feature request. Python 2 will not be vanishing from beneath your feet anytime soon. ;)

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It's less about where Python 2.7 is going and more about where the libraries themselves are going. If you use a library which is considered deprecated by a large part of the python community, don't be surprised not to aspire new contributors.

No one expects 2.7 to go away, that doesn't mean contributors want to deal with Python 2 when 3 is available elsewhere.

I can't fault PayPal for releasing their code as open source. It's great. More companies should do it.

But indeed, I don't think it would be a good idea to wholeheartedly adopt their stack. gevent wasn't even a good idea on Python 2, and I suspect the large companies that use it have built up an armor of best practices and workarounds for its glitches, which you won't know about if you start using it.

I realize this is a day late and thus ancient history in HN time, but I figure a reply couldn't hurt. You're absolutely right that it would be unwise for the typical Python team to fully adopt the stack, especially this early in the release.

In fact the earliness of SuPPort's release serves to illustrate that the primary goal: demonstrating many best practices for building servers and clients, in any language or stack. As far as gevent goes, well, that's mostly an ecosystem-dependent turn of fate that continues to serve us well. A data point gladly share, but not the core message per se. :)

It's tendentious to describe gevent as deprecated.

Like Twisted, there are many projects that continue to choose to use gevent, and consequently (for either of those libraries) Python 2. They solve real problems, as does the codebase we extracted SuPPort from, and we hope to help these projects rather than shun them.

Additionally, asyncio doesn't provide the same user API that gevent does: automagic task switching. Whether or not you like that API is a separate issue.

Finally, even if a person has no interest in using SuPPort, we hope that it might provide her insights into problems she'll likely encounter when using asyncio (or Tornado or Twisted or eventlet or any evented system.)

I re-read my comment and found it to be unwittingly snarky, I apologize. I really like the fact you guys open sourced your stack. I just meant to warn you that 2.x-only stacks are unlikely to attract new people because, as I said, when 3.4 is out there and usable, why would someone start something fresh on 2.x?

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