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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 addVariables(self, variables, domain):
 """ Add one or more variables to the problem Example: 9 True @param variables: Any object containing a sequence of objects represeting problem variables @type variables: sequence of hashable objects @param domain: Set of items defining the possible values that the given variables may assume @type domain: list, tuple, or instance of C{Domain} """

        for variable in variables:
            self.addVariable(variable, domain)