def __init__(self, s, t):
self.max_value = None
LevMatrix.__init__(self, s, t, weight=weight)
def __init__(self, s, t):
self.maxCell = LevMatrixCell(-1, -1, 0, None, None)
LevMatrix.__init__(self, s, t, weight=lambda a, b: getPAMWeight(a, b))
