Removing axis lines

Hi, I am looking for a way to remove two axis lines. What I

    > would like to have is x-axis and y-axis, but without the
    > lines at the top or to the right. I cannot find the option
    > where I can specify this and I'd appreciate if someone
    > could point it out to me.

This is not really possible but is something we plan to fix soon.

There are some workarounds, but a bit hackish and complicated (make
the axis_on property of the Axes False, use axvspan and axhspan to
make your own axis lines where you want them). If anyone has a little
example code showing this, please post.