adding new functionality to a function non-intrusively!

[peter]

thx a lot for the information on decorators

this will be very usefull... (sounds like a little step towards aspect
orientated programming,:) )

Because I use libraries which rely on boost-python I  can not jump into
python 2.4

but I understand the main idea and can also use it in python 2.3
(it will only cost a little bit more extra coding)