## An abstract base class to encapsulate all the problem-specific knowledge.
class GAProblem :
    def __init__(self, fitnessFn) :
        self.fitnessFn = fitnessFn
        pass

    def makePopulation(self, popsize) :
        raise NotImplementedError

    def evalFitness(self, pop) :
        for p in pop:
            p.fitness = self.fitnessFn(p)
            
    def solved(self, pop) :
        raise NotImplementedError
    
    def mutate(self, c) :
        raise NotImplementedError


### abstract base class representing Chromosomes. WIll I need this?
class Chromosome :
    def __init__(self) :
        self.fitness = 0

    def __repr__(self) :
        raise NotImplementedError

    def __lt__(self, other) :
        return self.fitness < other.fitness

    def __gt__(self, other) :
        return self.fitness > other.fitness