Fredrik Lundh <[EMAIL PROTECTED]> writes: > "join" doesn't use __add__ at all, so I'm not sure in what sense that > would be more predictable. I'm probably missing something, but I > cannot think of any core method that uses a radically different > algorithm based on the *type* of one argument.
3 ** 2, vs. 3 ** 2.5 Actually it's worse than depending on just the type: (-3.0) ** 2.0 works, while (-3.0) ** 2.5 throws an error. But you can do (-3.0) ** (2.5 + 0.0j) for yet another radically different algorithm. I'm not sure whether the Python spec requires (-3.0)**2.0 to work, or if it's just an implementation-specific hack. In most languages, it wouldn't work. -- http://mail.python.org/mailman/listinfo/python-list
