Fredrik Lundh wrote: > do you often write programs that "sums" various kinds of data types, and > for which performance issues are irrelevant? > > or are you just stuck in a "I have this idea" loop?
Maybe he's just insisting on the principle of least surprise? Personally, I'd rather expect sum() to work for strings and Python to issue a warning instead of raising a type error. That warning might also be appropriate when using sum() on other builtin sequence types. -- http://mail.python.org/mailman/listinfo/python-list
