order of object desctruction

[bromden]

this is really tricky,

if an imported module is still available within the __del__ 
method of some object seems to depend on implementation, version 
and a bit of luck (then it's all about timing, i think),

so generally you should stick to the rule that "__del__() 
methods should do the absolute minimum needed to maintain 
external invariants" and use the conditional

-- 
bromden[at]gazeta.pl