Another an imation question

[dean moore]

Trying to animate a line, e.g., from (x1, y1) to (x2, y2), then anew, from (x2, y2) to (x3, y3) ...

I try versions of the snippet

a = animate([line((i,i), (i+1,i+1)) for i in srange(0,2,0.1)], figsize=[4,4])
a.show()

A graph shows up, but nothing else.

Ideas?

Thanks!

Dean