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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def matchSubset(**kwargs):
 """extract matches from player's entire match history given matching criteria kwargs"""

        ret = []
        for m in self.matches:
            allMatched = True
            for k,v in iteritems(kwargs):
                mVal = getattr(m, k)
                try:
                    if v == mVal or v in mVal: continue # this check passed
                except Exception: pass # if attempting to check __contains__ and exception is raised, it's assumed to be false
                allMatched = False
                break
            if allMatched: ret.append(m)
        return ret