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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 isLearned(self, mode=None):
 """Return true if this parameter is learned Hidden parameters are not learned; automatic parameters inherit behavior from package/cl; other parameters are learned. If mode is set, it determines how automatic parameters behave. If not set, cl.mode parameter determines behavior. """

        if "l" in self.mode: return 1
        if "h" in self.mode: return 0
        if "a" in self.mode:
            if mode is None: mode = 'ql' # that is, iraf.cl.mode
            if "h" in mode and "l" not in mode:
                return 0
        return 1