[Python-Dev] PEP 408 -- Standard library preview package (original) (raw)

Matt Joiner anacrolix at gmail.com
Fri Jan 27 16:35:53 CET 2012

A more normal incantation, as is often the way for packages that became parts of the standard library after first being a third party library (sometimes under a different name, e.g. simplejson -> json):

try:  from preview import thing except ImportError:  import thing So no need to target a very specific version of Python.

I think this is suboptimal, having to guess where modules are located, you end up with this in every module:

try: import cjson as json except ImportError: try: import simplejson as json except ImportError: import json as json

Perhaps the versioned import stuff could be implemented (whatever the syntax may be), in order that something like this can be done instead:

import regex('preview') import regex('3.4')

Where clearly the preview version makes no guarantees about interface or implementation whatsoever.

etc.

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