"Carl Banks" <[EMAIL PROTECTED]> skrev i meddelandet news:[EMAIL PROTECTED] > On Mar 3, 4:17 pm, Raymond Hettinger <[EMAIL PROTECTED]> wrote: >> Since Python doesn't support having two methods with the same name, >> the usual solution is to provide alternative constructors using >> classmethod(): >> >> @classmethod >> def from_decimal(cls, d) >> sign, digits, exp = d.as_tuple() >> digits = int(''.join(map(str, digits))) >> if sign: >> digits = -digits >> if exp >= 0: >> return cls(digits * 10 ** exp) >> return cls(digits, 10 ** -exp) > > > Note that even some of Python's built in types (dict *cough*) > implement homemade function overloading. > > The OP wanted to write a constructor that could accept either a pair > of integers or a rational, there would be a good precedent for it. > > However, I would advise the OP to use the constructor only for the > most common arguments, and use classmethods for more obscure, less > common arguments (such as decimal or even float).
OP understands and thanfully accepts the suggestion. -- Regards Konrad Viltersten -------------------------------- sleep - a substitute for coffee for the poor ambition - lack of sense to be lazy -- http://mail.python.org/mailman/listinfo/python-list
