Eric Nieuwland wrote:Would it be an idea to submit a PEP for extending the 'import' keyword?
No. Normally, packages should aim for backwards compatibility, so that applications would only want to specify a minimum version, such as
import xml assert xml.version_info > (0,8,2)
If you really want side-by-side installation of different versions, and a mechanism to select between them, the package could support
import xml_0_8_2 as xml
IOW, "import-as" should be sufficient for what you want to achieve.
Unless you are doing comparison tests, where it would be nice to be able to state in a generic way that the new implementation should not change answers. May be something like:
import spam[1] as spamnext # next version import spam[0] as spamnow # current version
assert spamnow.Ni() == spamnext.Ni()
--eric
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