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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 set_scf_initial_guess(self, guess="SAD"):
 """ Set initial guess method to be used for SCF Args: guess: The initial guess method. (str) """

        availabel_guesses = {"core", "sad", "gwh", "read", "fragmo"}
        if guess.lower() not in availabel_guesses:
            raise ValueError("The guess method " + guess + " is not supported "
                                                           "yet")
        self.params["rem"]["scf_guess"] = guess.lower()