This example is right out of python library reference. What's wrong here? import optparse
def store_value(option, opt_str, value, parser): setattr(parser.values, option.dest, value) parser = optparse.OptionParser() parser.add_option("--foo", action="callback", callback=store_value, type="int", nargs=3, dest="foo") (opt,args) = parser.parse_args ('--foo a b c'.split()) [...] /usr/lib64/python2.5/optparse.pyc in _process_args(self, largs, rargs, values) 1423 elif self.allow_interspersed_args: 1424 largs.append(arg) -> 1425 del rargs[0] 1426 else: 1427 return # stop now, leave this arg in rargs TypeError: 'str' object doesn't support item deletion -- http://mail.python.org/mailman/listinfo/python-list