Code works fine except...

Ross ross.jett at
Mon May 4 10:01:07 EDT 2009

On May 3, 10:16 pm, John Yeung <gallium.arsen... at> wrote:
> On May 3, 11:29 pm, Chris Rebert <c... at> wrote:
> > Probably not the cause of the problem, but where
> > did the magic numbers 1.072 and 1.08 come from?
> It is perhaps not the most direct cause of the problem, in the sense
> that the magic numbers could take various values and the problem would
> still be there.  But the magic numbers appear to be used for
> "spreading out" bye selection, and that's broken.
> The extended slice as written will always pick the first element,
> since the step is guaranteed to be positive.  Since the first player
> (or None, when there are an odd number of players) stays put in the
> first position during the round_robin shuffle, that player will always
> be selected for a bye.
> Further, as written, the calculated number of byes has no bearing on
> the actual number of byes selected.
> I think what I would do is adjust the shuffling algorithm in such a
> way that everyone moves through the various positions in the list
> (would it be as simple as adding a shift at the end of
> round_robin???).  Then I could simply select the byes from one end of
> the list (with a regular slice instead of an extended slice).
> John

The "magic numbers" that everyone is wondering about are indeed used
for spreading out the bye selection and I got them by simply
calculating a line of best fit when plotting several courts: byes

The "byes = #whatever" in my code calculate the number of tuples that
need to be placed in the bye_list.

At first glance, the suggestion of adding a simple shift at the end of
round_robin doesn't seem to work since round_robin already shifts
everything except for the first position already. Please correct me if
I'm wrong because you might have been suggesting something different.

More information about the Python-list mailing list