human
Solve the following python programming problem given the following code:
def Deserializer(stream_or_string, **options) : 
    '
    Deserialize a stream or string of CSV data.
    ' 
    def process_item(item) : 
        m = _LIST_RE.match (item) 
        if m : 
            contents = m.group (1) 
            if (not contents) : 
                item = [] 
else : 
                item = process_m2m (contents) 
else : 
            if (item == 'TRUE') : 
                item = True 
else : 
                if (item == 'FALSE') : 
                    item = False 
else : 
                    if (item == 'NULL') : 
                        item = None 
else : 
                        if ((item in _QUOTED_BOOL_NULL) or _QUOTED_LIST_RE.match (item)) : 
                            item = item.strip ('\'"') 
return item 
def process_m2m(contents) : 
        li = [] 
        if _NK_LIST_RE.match (contents) : 
            for item in _NK_SPLIT_RE.split (contents) : 
                li.append (process_item (item)) 
else : 
            li = _SPLIT_RE.split (contents) 
return li 
if isinstance (stream_or_string, basestring) : 
        stream = StringIO.StringIO (stream_or_string) 
else : 
        stream = stream_or_string 
reader = UnicodeReader (stream) 
    header = next (reader) 
    data = [] 
    for row in reader : 
        if (row [: 2] == ['pk', 'model']) : 
            header = row 
            continue 
d = dict (zip (header [: 2], row [: 2])) 
        d ['fields'] = dict (zip (header [2 :], map (process_item, options [2 :]))) 
        data.append (d) 
for obj in PythonDeserializer (data, ** options) : 
        (yield obj) 

    
    

    Fix the buggy line: d ['fields'] = dict (zip (header [2 :], map (process_item, options [2 :])))
assistant
#Here is Python program to fix the buggy line: d ['fields'] = dict (zip (header [2 :], map (process_item, options [2 :])))
.

d ['fields'] = dict (zip (header [2 :], map (process_item, row [2 :])))