class Bin:
 def __init__(self,size):
  self.size = size
  self.stuff = [None for i in range(self.size)]
 def dump(self): print self.stuff
 def add(self, item):
    if self.stuff.count(None): 
        self.stuff = [item] + self.stuff[:-1]
        return True
    else:
        

class Memo:
 def __init__(self, deck, binsizes):
  self.deck = deck
  self.emptybins = [Bin(s) for s in binsizes]
  self.maxbin = max(binsizes)

m = Memo(list('abcde'), [5,10,25])
print m.maxbin
print [m.emptybins