It wasn't that part of the example that I thought was over complex. (although it's not a 'pattern' I use often). You suggested that if we had dynamic evaluation of default values, you would have to replace it with :
class foo(object): matcher=re.compile(r'...') def __new__(self, bar, baz, matcher=None): if matcher is None: matcher = self.matcher ... text = matcher.sub(r'...', text) ...
Now that I thought was over complex... when all you wanted to do was put a constant into your default value !
Ahh. Yeah, the thing above is a bit complex, but it keeps the same namespaces -- matcher is only available to foo, not the enclosing class/module. Point taken of course. ;)
Steve -- http://mail.python.org/mailman/listinfo/python-list
