making python scripts backwards compatible

[Martin v. Löwis]

"James J. Besemer" <jb at cascade-sys.com> writes:

> You don't have to test or support them all.  Just name one version
> guaranteed to work, e.g. the one you did the development under.  This should
> not be a hardship for anybody.

For the standard Python distribution, there is a global statement that
it only works with the Python release it came with: no earlier
version, no later version. That may not be in the documentation, so I
state it here.

There are a few known exceptions: SRE works with Python 1.5 and later
(up to the version it ships with); xml.* works with Python 2.0 and
later (used to be 1.5.2)

Regards,
Martin