backward/forward compatibility in PYTHON?

[Lulu of the Lotus-Eaters]

holger krekel <pyth at devel.trillke.net> wrote previously:
|- if you know you are using e.g. python2.2 features you might
|  want to code a one-line assertion like
|
|    asssert(sys.version_info[:2]>=(2,2))

    >>> import sys
    >>> assert(sys.version_info[:2]>=(2,2))
    Traceback (innermost last):
      File "<stdin>", line 1, in ?
    AttributeError: version_info

Of course, it *does* work in Python 2.2 :-).

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