human
Solve the following python programming problem given the following code:
@ staticmethod 
def link(**kwargs) : 
    '
        Shortcut for creating a cell that is a link. The URL is the result of calling `get_absolute_url()` on the object.
        ' 
    def url(table, column, row, value) : 
        del table, value 
        r = getattr_path (row, column.attr) 
        return (r.get_absolute_url () if r else '') 
setdefaults (kwargs, dict (cell__url = kwargs)) 
    return Column (** kwargs) 

    
    

    Fix the buggy line: setdefaults (kwargs, dict (cell__url = kwargs))
assistant
#Here is Python program to fix the buggy line: setdefaults (kwargs, dict (cell__url = kwargs))
.

setdefaults (kwargs, dict (cell__url = def url())