Converts a list of Parameters into DEAP format.

def _make_parameters(self):
        """Converts a list of Parameters into DEAP format."""
        self.value_means = []
        self.value_ranges = []
        self.arrangement = []
        self.variable_parameters = []
        current_var = 0
        for parameter in self.parameters:
            if parameter.type == ParameterType.DYNAMIC:
                self.value_means.append(parameter.value[0])
                if parameter.value[1] < 0:
                    raise AttributeError(
                        '"{}" parameter has an invalid range. Range values '
                        'must be greater than zero'.format(parameter.label))
                self.value_ranges.append(parameter.value[1])
                var_label = 'var{}'.format(current_var)
                self.arrangement.append(var_label)
                self.variable_parameters.append(var_label)
                current_var += 1
            elif parameter.type == ParameterType.STATIC:
                self.arrangement.append(parameter.value)
            else:
                raise AttributeError(
                    '"{}"Unknown parameter type ({}). Parameters can be STATIC or'
                    ' DYNAMIC.'.format(parameter.type))
        return