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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 from_dict(cls, coll, d):
 """Construct from dict :param coll: Collection for the mark :param d: Input :type d: dict :return: new instance :rtype: Mark """

        return Mark(collection=coll, operation=Operation[d[cls.FLD_OP]],
                    pos=d[cls.FLD_MARK], field=d[cls.FLD_FLD])