How can i click on image button with selenium - python

Question

I am writing a selenium web driver program using python. I need help to click on image button with selenium in python.

My html page info is as follows:

<code>
   <a href="javascript:void(0);" onclick="location.href='Yad2Edit.php?SalesID=11847965&amp;leumiCardEnabled=0'">
      <img style="border: 0px;" src="http://images.yad2.co.il/Pic/site_images/yad2/MyYad2/images/myorderbottom/new/edit_ad.png" alt="">
    </a>
</code>