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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def convert_verse_group_elements(self):
 """ A song, poem, or verse Implementor’s Note: No attempt has been made to retain the look or visual form of the original poetry. This unusual element, <verse-group> is used to convey poetry and is recursive in nature (it may contain further <verse-group> elements). Examples of these tags are sparse, so it remains difficult to ensure full implementation. This method will attempt to handle the label, title, and subtitle elements correctly, while converting <verse-lines> to italicized lines. """

        for verse_group in self.main.getroot().findall('.//verse-group'):
            #Find some possible sub elements for the heading
            label = verse_group.find('label')
            title = verse_group.find('title')
            subtitle = verse_group.find('subtitle')
            #Modify the verse-group element
            verse_group.tag = 'div'
            verse_group.attrib['id'] = 'verse-group'
            #Create a title for the verse_group
            if label is not None or title is not None or subtitle is not None:
                new_verse_title = etree.Element('b')
                #Insert it at the beginning
                verse_group.insert(0, new_verse_title)
                #Induct the title elements into the new title
                if label is not None:
                    append_all_below(new_verse_title, label)
                    remove(label)
                if title is not None:
                    append_all_below(new_verse_title, title)
                    remove(title)
                if subtitle is not None:
                    append_all_below(new_verse_title, subtitle)
                    remove(subtitle)
            for verse_line in verse_group.findall('verse-line'):
                verse_line.tag = 'p'
                verse_line.attrib['class'] = 'verse-line'