passing url variables to views

this is the URS i get

http://127.0.0.1:8000/my_app/run_delete/?user_del=ccc_ccc***a_b***/

and i want to be able to get the string  ccc_ccc***a_b***

my url pattern is: 

url(r'^run_delete/(?P<user_del>\w+)/$', views.run_delete, name='run_delete')

but it looks like is not catching it,   i am missing something? i am using django 1.9

thanks guys

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