import random
mu=np.array([[0, 100],[-100, 900]])
sigma=np.array([[1, 1],[1, 1]])
number=random.normalvariate(mu, s)
mu
array([[   0,  100],
       [-100,  900]])
sigma
array([[1, 1],
       [1, 1]])
number
array([[-5.89493150e-01,  9.94105068e+01],
       [-1.00589493e+02,  8.99410507e+02]])