Oh my goodness, it really is that easy! I guess I assumed that was
too simple to work. Silly me. Thanks Andre!
On Oct 15, 2009, at 10:31 AM, Andre Engels wrote:
On Thu, Oct 15, 2009 at 5:14 PM, David Perlman <dperl...@wisc.edu>
wrote:
I'm trying to figure out how to define a class so that its
instances have a
method that return a different object of the same class.
In particular, I'm trying to run a simple prisoner's dilemma game,
and I
want to make a "game" object that has a method which returns the
"game"
object with the payoffs reversed; that is, the payoff matrix from
the other
player's point of view. Basically a kind of transpose which is
specific to
this application.
class Payoffs(list):
def __init__(self, value=None):
list.__init__(self)
if value==None: # use a default prisoner's dilemma
value=[[(3,3),(0,5)],
[(5,0),(1,1)]]
self.extend(value)
def __repr__(self):
l1="Your Choice: Cooperate Defect\n"
l2="My choice: -------------------------\n"
l3="Cooperate | (% 3d,% 3d) | (% 3d,% 3d) |\n" % (self[0]
[0][0],
self[0][0][1], self[0][1][0], self[0][1][1])
l4=" ----------------------- \n"
l5="Defect | (% 3d,% 3d) | (% 3d,% 3d) |\n" % (self[1]
[0][0],
self[1][0][1], self[1][1][0], self[1][1][1])
l6=" -------------------------\n"
return l1+l2+l3+l4+l5+l6
def transpose(self):
And that's where I'm at. How can I have the transpose method
return another
Payoffs object? Here's the beginning of it:
def transpose(self):
trans=[[(self[0][0][1],self[0][0][0]),
(self[1][0][1],self[1][0][0])],
[(self[0][1][1],self[0][1][0]),
(self[1][1][1],self[1][1][0])]]
But now "trans" is type list, not type Payoffs. I don't know how
to get it
into a Payoffs object so that the transpose will have my other new
methods.
Thanks very much. I searched for answers but I'm not sure what
this would
be called, which made it hard to find.
I may be thinking too simple, but isn't this just:
def transpose(self):
trans=[[(self[0][0][1],self[0][0][0]), (self[1][0][1],self[1][0]
[0])],
[(self[0][1][1],self[0][1][0]), (self[1][1][1],self[1]
[1][0])]]
return Payoffs(trans)
--
André Engels, andreeng...@gmail.com
--
-dave----------------------------------------------------------------
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