Stef Mientki wrote: > hello, > > I discovered that boolean evaluation in Python is done "fast" > (as soon as the condition is ok, the rest of the expression is ignored). > > Is this standard behavior or is there a compiler switch to turn it on/off ? > > thanks, > Stef Mientki
It's called short circuit evaluation and as far as I know it's standard in most all languages. This only occurs if a conditional evaluates to True and the only other operators that still need to be evaluated are 'or's or the condition evaluates to False and all the other operators are 'and's. The reason is those other operators will never change the outcome: True or'd with any number of False's will still be True and False and'ed to any number of Trues will still be False. My question would be why would you *not* want this? Ian -- http://mail.python.org/mailman/listinfo/python-list
