On 9/14/07, Steven D'Aprano <[EMAIL PROTECTED]> wrote: > I thought that overflow errors would be a thing of the past now that > Python automatically converts ints to longs as needed. Unfortunately, > that is not the case. > > >>> class MyInt(int): > ... pass > ... > >>> MyInt(sys.maxint) > 2147483647 > >>> MyInt(sys.maxint+1) > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > OverflowError: long int too large to convert to int
Not totally unrelated, but in Py3k, as it seems, overflows are really things of the past: Python 3.0a1 (py3k:58061, Sep 9 2007, 13:18:37) [GCC 4.1.3 20070831 (prerelease) (Ubuntu 4.1.2-16ubuntu1)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> class MyInt(int): ... pass ... >>> import sys >>> MyInt(sys.maxint) 2147483647 >>> MyInt(sys.maxint+1) 2147483648 Thanks to your mail, only now I see how important this change (int/liong unification) really is! > How do I subclass int and/or long so that my class also auto-converts > only when needed? What about just subclassing long - is this not an option? > Steven. > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://www.advogato.org/person/eopadoan/ Bookmarks: http://del.icio.us/edcrypt -- http://mail.python.org/mailman/listinfo/python-list
