I want to print 9pzmaps in one figure in 9 separate plots (3 rows * 3 columns)

I tried something like:

plt.subplot(3,3,1)control.pzmap(tf1)plt.subplot(3,3,2)control.pzmap(tf2)plt.subplot(3,3,3)control.pzmap(tf3)# etc..

But it doesn't work. It seems that this reuses the same plot