<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def coupl_model1(self):
 """ In model 1, we want enforce the following signs on the couplings. Model 2 has the same couplings but arbitrary signs. """

        self.Coupl[0,0] = np.abs(self.Coupl[0,0])
        self.Coupl[0,1] = -np.abs(self.Coupl[0,1])
        self.Coupl[1,1] = np.abs(self.Coupl[1,1])