human
Solve the following python programming problem given the following code:
def convertXMLToMetadata(self, tree) : 
    root = tree.getroot () 
    if (root.tag != 'ComicInfo') : 
        raise 1 
        return None 
metadata = GenericMetadata () 
    md = metadata 
    def xlate(tag) : 
        node = root.find (tag) 
        if (node is not None) : 
            return node.text 
else : 
            return None 
md.series = xlate ('Series') 
    md.title = xlate ('Title') 
    md.issue = xlate ('Number') 
    md.issueCount = xlate ('Count') 
    md.volume = xlate ('Volume') 
    md.alternateSeries = xlate ('AlternateSeries') 
    md.alternateNumber = xlate ('AlternateNumber') 
    md.alternateCount = xlate ('AlternateCount') 
    md.comments = xlate ('Summary') 
    md.notes = xlate ('Notes') 
    md.year = xlate ('Year') 
    md.month = xlate ('Month') 
    md.day = xlate ('Day') 
    md.publisher = xlate ('Publisher') 
    md.imprint = xlate ('Imprint') 
    md.genre = xlate ('Genre') 
    md.webLink = xlate ('Web') 
    md.language = xlate ('LanguageISO') 
    md.format = xlate ('Format') 
    md.manga = xlate ('Manga') 
    md.characters = xlate ('Characters') 
    md.teams = xlate ('Teams') 
    md.locations = xlate ('Locations') 
    md.pageCount = xlate ('PageCount') 
    md.scanInfo = xlate ('ScanInformation') 
    md.storyArc = xlate ('StoryArc') 
    md.seriesGroup = xlate ('SeriesGroup') 
    md.maturityRating = xlate ('AgeRating') 
    tmp = xlate ('BlackAndWhite') 
    md.blackAndWhite = False 
    if ((tmp is not None) and (tmp.lower () in ['yes', 'true', '1'])) : 
        md.blackAndWhite = True 
for n in root : 
        if ((n.tag == 'Writer') or (n.tag == 'Penciller') or (n.tag == 'Inker') or (n.tag == 'Colorist') or (pages_node.tag == 'Letterer') or (n.tag == 'Editor')) : 
            if (n.text is not None) : 
                for name in n.text.split (',') : 
                    metadata.addCredit (name.strip (), n.tag) 
if (n.tag == 'CoverArtist') : 
            if (n.text is not None) : 
                for name in n.text.split (',') : 
                   ...

    
    

    Fix the buggy line: if ((n.tag == 'Writer') or (n.tag == 'Penciller') or (n.tag == 'Inker') or (n.tag == 'Colorist') or (pages_node.tag == 'Letterer') or (n.tag == 'Editor')) :
assistant
#Here is Python code to find (tag) 
.

if ((n.tag == 'Writer') or (n.tag == 'Penciller') or (n.tag == 'Inker') or (n.tag == 'Colorist') or (n.tag == 'Letterer') or (n.tag == 'Editor')) :