PseudoPsectrum of Random Matrix. 

why my kernel dies when I put : 

```
n  = 2000
mu = 0  
sigma = 1
A  = np.random.normal(mu, sigma, (n,n))

pseudo = NonnormalAuto(A, 1e-5, 1)
pseudo.plot([10**k for k in range(-4, 3)], spectrum=eigvals(A))
pyplot.show()

```