I am not sure what find_element_by_*
I should use with respect to below "inspect element" to click on the download button. I am new to selenium still dealing with basics.
<a href="#" style="font-size:15px;" onclick="if(typeof jsfcljs == 'function'){jsfcljs(document.forms['activationpage3'],'activationpage3:j_id_id21,activationpage3:j_id_id21','');}return false">Download Key File</a>