human
Solve the following python programming problem given the following code:
@ non_atomic_requests 
def guid_search(request, api_version, guids) : 
    lang = request.LANG 
    def guid_search_cache_key(guid) : 
        key = ('guid_search:%s:%s:%s' % (api_version, lang, guid)) 
        return hashlib.md5 (smart_str (key)).hexdigest () 
guids = ([g.strip () for g in guids.split (',')] if guids else []) 
    addons_xml = cache.get_many ([guid_search_cache_key (g) for g in guids]) 
    dirty_keys = set () 
    for g in guids : 
        key = guid_search_cache_key (g) 
        if (key not in addons_xml) : 
            dirty_keys.add (key) 
            try : 
                addon = Addon.objects.get (guid = g, disabled_by_user = False, status__in = SEARCHABLE_STATUSES) 
except Addon.DoesNotExist : 
                addons_xml [key] = '' 
else : 
                addon_xml = render_xml_to_string (guids, 'legacy_api/includes/addon.xml', { 
                    'addon' : addon, 
                    'api_version' : api_version, 
                    'api' : legacy_api, 
}) 
                addons_xml [key] = addon_xml 
cache.set_many (dict (((k, v) for (k, v) in addons_xml.iteritems () if (k in dirty_keys)))) 
    compat = CompatOverride.objects.filter (guid__in = guids).transform (CompatOverride.transformer) 
    addons_xml = [v for v in addons_xml.values () if v] 
    return render_xml (request, 'legacy_api/search.xml', { 
        'addons_xml' : addons_xml, 
        'total' : len (addons_xml), 
        'compat' : compat, 
        'api_version' : api_version, 
        'api' : legacy_api, 
}) 

    
    

    Fix the buggy line: addon_xml = render_xml_to_string (guids, 'legacy_api/includes/addon.xml', {
assistant
#Here is Python code to fix the buggy line: addon_xml = render_xml_to_string (guids, 'legacy_api/includes/addon.

addon_xml = render_xml_to_string (request, 'legacy_api/includes/addon.xml', {