[Python-Dev] PEP 408 -- Standard library __preview__ package
steve at pearwood.info
Fri Jan 27 21:48:55 CET 2012
Eli Bendersky wrote:
>> from __preview__ import thing
>> except ImportError:
>> import thing
>> So no need to target a very specific version of Python.
> Yep, this is what I had in mind. And it appeared too trivial to place
> it in the PEP.
Trivial and wrong.
Since thing and __preview__.thing may have subtle, or major, API differences,
how do you use it?
result = thing.foo(a, b, c) + thing.bar(x)
# Must be the preview version
result = thing.foobar(a, c, b, x)
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