On Sat, 25 Feb 2006 17:56:42 -0800, bonono wrote: > > Steve Holden wrote: >> > Some other functions rely on the AssertionError exception to indicate to >> > the user that something went wrong instead of using a user defined >> > exception. >> > >> >> The real problem here is that you appear to be using AssertionError in >> an inappropriate way. If some caller passes an incorrect argument to >> your function, raise a ValueError. If you are passed the wrong type of >> data, raise a TypeError. And so on. Or, as you imply you thought about, >> raise a user-defined error. >> >> Generally speaking you should reserve assert for circumstances where you >> expect some invariant condition to be true. Otherwise use an "if" >> statement and raise some other exception if the condition is True. >> > What would be the occasion that AssertionError be the right exception > to raise then ?
Surely that would be when an assert statement fails? I don't think AssertionError should be called by hand. At least, I wouldn't do so. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
