human
Solve the following python programming problem given the following code:
@ staff_member_required 
def sponsor_export_data(request) : 
    sponsors = [] 
    data = '' 
    for sponsor in Sponsor.objects.order_by ('added') : 
        d = { 
            'name' : sponsor.name, 
            'url' : sponsor.external_url, 
            'level' : (sponsor.level.order, sponsor.level.name), 
            'description' : '', 
} 
        for sponsor_benefit in sponsor.sponsor_benefits.all () : 
            if (sponsor_benefit.benefit_id == 2) : 
                d ['description'] = sponsor_benefit.text 
sponsors.append (d) 
def izip_longest(* args) : 
        fv = None 
        def sentinel(counter = ([fv] * (len (args) - 1)).pop) : 
            (yield counter ()) 
iters = [itertools.chain (it, sentinel (), itertools.repeat (fv)) for it in args] 
        try : 
            for tup in itertools.izip (* iters) : 
                (yield tup) 
except IndexError : 
            pass 
def pairwise(iterable) : 
        (a, b) = itertools.tee (iterable) 
        b.next () 
        return izip_longest (a, b) 
def level_key(s) : 
        return s ['level'] 
for (level, level_sponsors) in itertools.groupby (sorted (sponsors, key = level_key), level_key) : 
        data += ('%s
' % ('-' * (len (level [1]) + 4))) 
        data += ('| %s |
' % level [1]) 
        data += ('%s

' % ('-' * (len (level [1]) + 4))) 
        for (sponsor, next) in pairwise (level_sponsors) : 
            description = sponsor ['description'].strip () 
            description = (d if description else '-- NO DESCRIPTION FOR THIS SPONSOR --') 
            data += ('%s

%s' % (sponsor ['name'], description)) 
            if (next is not None) : 
                data += ('

%s

' % ('-' * 80)) 
else : 
                data += '

' 
return HttpResponse (data, content_type = 'text/plain;charset=utf-8') 

    
    

    Fix the buggy line: description = (d if description else '-- NO DESCRIPTION FOR THIS SPONSOR --')
assistant
#Here is Python program to fix the buggy line: description = (d if description else '-- NO DESCRIPTION FOR THIS SPONSOR --')
.

description = (description if description else '-- NO DESCRIPTION FOR THIS SPONSOR --')