Brick wall with matplotlib

Question

I'm working on a program about a soliton going through a barrier and I'm trying to make the barrier look like a real one, so to say, to be made of bricks. The problem is that I couldn't found how to plot the 'brick' texture. I use fill_between() but if there's another option that admits bricks, I wouldn't have problem with using it.

My code is:

gs=GridSpec(8,1)  #7 rows and 1 column
state=self.fig.add_subplot(gs[2:,:])
light=self.fig.add_subplot(gs[0:2,:])
state.set_xlabel("Position ($x/ \\xi$)")
state.set_ylabel("Density $|\psi|^2 \\xi$")
state.plot(posit,phi2)
state.fill_between(posit,phi2,0,facecolor='0.80')
potential=state.twinx()
potential.plot(posit,pote,'g')

with all the arrays well defined and so. There's no problem with the code when running the program, but I would like to know how to draw the bricks if that's possible.

I attach an image of the actual situation, the barrier is empty for the moment waiting to be built with bricks, to make it more visual.