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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 add_params(self, p):
 """Add new variables or change values to be used for particular parameter names that will not be jointly varied."""

        new_params = p.copy()
        for key,val in new_params.items():
            if not isinstance(val, collections.Iterable):
                new_params[key] = [new_params[key]]
            #_check_comb_param(key, val)
        self.comb_params.update(new_params)