class Bunch:
    def __init__(self, **kwds):
        self.__dict__.update(kwds)

# that's it!  Now, you can create a Bunch
# whenever you want to group a few variables:

point = Bunch(datum=y, squared=y*y, coord=x)

# and of course you can read/write the named
# attributes you just created, add others, del
# some of them, etc, etc:
if point.squared > threshold:
    point.isok = 1
    
# Even shorter Bunch, Doug Hudgeon, 2001/08/29
class Bunch:
    __init__ = lambda self, **kw: setattr(self, '__dict__', kw)
    
    
# When python 2.2 permits the above dynamic __dict__ this could be
# be something like:

class Bunch(list):
    def __init__(*args, **kw):
        self[:] = list(args)
        setattr(self, '__dict__', kw)