How to use the mediafile.ImageType function in mediafile

return pic

    def delete(self, mutagen_file):
        """Remove all images from the file.
        """
        mutagen_file.clear_pictures()


class APEv2ImageStorageStyle(ListStorageStyle):
    """Store images in APEv2 tags. Values are `Image` objects.
    """
    formats = ['APEv2File', 'WavPack', 'Musepack', 'MonkeysAudio', 'OptimFROG']

    TAG_NAMES = {
        ImageType.other: 'Cover Art (other)',
        ImageType.icon: 'Cover Art (icon)',
        ImageType.other_icon: 'Cover Art (other icon)',
        ImageType.front: 'Cover Art (front)',
        ImageType.back: 'Cover Art (back)',
        ImageType.leaflet: 'Cover Art (leaflet)',
        ImageType.media: 'Cover Art (media)',
        ImageType.lead_artist: 'Cover Art (lead)',
        ImageType.artist: 'Cover Art (artist)',
        ImageType.conductor: 'Cover Art (conductor)',
        ImageType.group: 'Cover Art (band)',
        ImageType.composer: 'Cover Art (composer)',
        ImageType.lyricist: 'Cover Art (lyricist)',
        ImageType.recording_location: 'Cover Art (studio)',
        ImageType.recording_session: 'Cover Art (recording)',
        ImageType.performance: 'Cover Art (performance)',
        ImageType.screen_capture: 'Cover Art (movie scene)',
        ImageType.fish: 'Cover Art (colored fish)',

def delete(self, mutagen_file):
        """Remove all images from the file.
        """
        mutagen_file.clear_pictures()


class APEv2ImageStorageStyle(ListStorageStyle):
    """Store images in APEv2 tags. Values are `Image` objects.
    """
    formats = ['APEv2File', 'WavPack', 'Musepack', 'MonkeysAudio', 'OptimFROG']

    TAG_NAMES = {
        ImageType.other: 'Cover Art (other)',
        ImageType.icon: 'Cover Art (icon)',
        ImageType.other_icon: 'Cover Art (other icon)',
        ImageType.front: 'Cover Art (front)',
        ImageType.back: 'Cover Art (back)',
        ImageType.leaflet: 'Cover Art (leaflet)',
        ImageType.media: 'Cover Art (media)',
        ImageType.lead_artist: 'Cover Art (lead)',
        ImageType.artist: 'Cover Art (artist)',
        ImageType.conductor: 'Cover Art (conductor)',
        ImageType.group: 'Cover Art (band)',
        ImageType.composer: 'Cover Art (composer)',
        ImageType.lyricist: 'Cover Art (lyricist)',
        ImageType.recording_location: 'Cover Art (studio)',
        ImageType.recording_session: 'Cover Art (recording)',
        ImageType.performance: 'Cover Art (performance)',
        ImageType.screen_capture: 'Cover Art (movie scene)',
        ImageType.fish: 'Cover Art (colored fish)',
        ImageType.illustration: 'Cover Art (illustration)',
        ImageType.artist_logo: 'Cover Art (band logo)',

TAG_NAMES = {
        ImageType.other: 'Cover Art (other)',
        ImageType.icon: 'Cover Art (icon)',
        ImageType.other_icon: 'Cover Art (other icon)',
        ImageType.front: 'Cover Art (front)',
        ImageType.back: 'Cover Art (back)',
        ImageType.leaflet: 'Cover Art (leaflet)',
        ImageType.media: 'Cover Art (media)',
        ImageType.lead_artist: 'Cover Art (lead)',
        ImageType.artist: 'Cover Art (artist)',
        ImageType.conductor: 'Cover Art (conductor)',
        ImageType.group: 'Cover Art (band)',
        ImageType.composer: 'Cover Art (composer)',
        ImageType.lyricist: 'Cover Art (lyricist)',
        ImageType.recording_location: 'Cover Art (studio)',
        ImageType.recording_session: 'Cover Art (recording)',
        ImageType.performance: 'Cover Art (performance)',
        ImageType.screen_capture: 'Cover Art (movie scene)',
        ImageType.fish: 'Cover Art (colored fish)',
        ImageType.illustration: 'Cover Art (illustration)',
        ImageType.artist_logo: 'Cover Art (band logo)',
        ImageType.publisher_logo: 'Cover Art (publisher logo)',
    }

    def __init__(self):
        super(APEv2ImageStorageStyle, self).__init__(key='')

    def fetch(self, mutagen_file):
        images = []
        for cover_type, cover_tag in self.TAG_NAMES.items():
            try:

mutagen_file.clear_pictures()


class APEv2ImageStorageStyle(ListStorageStyle):
    """Store images in APEv2 tags. Values are `Image` objects.
    """
    formats = ['APEv2File', 'WavPack', 'Musepack', 'MonkeysAudio', 'OptimFROG']

    TAG_NAMES = {
        ImageType.other: 'Cover Art (other)',
        ImageType.icon: 'Cover Art (icon)',
        ImageType.other_icon: 'Cover Art (other icon)',
        ImageType.front: 'Cover Art (front)',
        ImageType.back: 'Cover Art (back)',
        ImageType.leaflet: 'Cover Art (leaflet)',
        ImageType.media: 'Cover Art (media)',
        ImageType.lead_artist: 'Cover Art (lead)',
        ImageType.artist: 'Cover Art (artist)',
        ImageType.conductor: 'Cover Art (conductor)',
        ImageType.group: 'Cover Art (band)',
        ImageType.composer: 'Cover Art (composer)',
        ImageType.lyricist: 'Cover Art (lyricist)',
        ImageType.recording_location: 'Cover Art (studio)',
        ImageType.recording_session: 'Cover Art (recording)',
        ImageType.performance: 'Cover Art (performance)',
        ImageType.screen_capture: 'Cover Art (movie scene)',
        ImageType.fish: 'Cover Art (colored fish)',
        ImageType.illustration: 'Cover Art (illustration)',
        ImageType.artist_logo: 'Cover Art (band logo)',
        ImageType.publisher_logo: 'Cover Art (publisher logo)',
    }

def __init__(self, data, desc=None, type=None):
        assert isinstance(data, bytes)
        if desc is not None:
            assert isinstance(desc, six.text_type)
        self.data = data
        self.desc = desc
        if isinstance(type, int):
            try:
                type = list(ImageType)[type]
            except IndexError:
                log.debug(u"ignoring unknown image type index %s", type)
                type = ImageType.other
        self.type = type

"""Remove all images from the file.
        """
        mutagen_file.clear_pictures()


class APEv2ImageStorageStyle(ListStorageStyle):
    """Store images in APEv2 tags. Values are `Image` objects.
    """
    formats = ['APEv2File', 'WavPack', 'Musepack', 'MonkeysAudio', 'OptimFROG']

    TAG_NAMES = {
        ImageType.other: 'Cover Art (other)',
        ImageType.icon: 'Cover Art (icon)',
        ImageType.other_icon: 'Cover Art (other icon)',
        ImageType.front: 'Cover Art (front)',
        ImageType.back: 'Cover Art (back)',
        ImageType.leaflet: 'Cover Art (leaflet)',
        ImageType.media: 'Cover Art (media)',
        ImageType.lead_artist: 'Cover Art (lead)',
        ImageType.artist: 'Cover Art (artist)',
        ImageType.conductor: 'Cover Art (conductor)',
        ImageType.group: 'Cover Art (band)',
        ImageType.composer: 'Cover Art (composer)',
        ImageType.lyricist: 'Cover Art (lyricist)',
        ImageType.recording_location: 'Cover Art (studio)',
        ImageType.recording_session: 'Cover Art (recording)',
        ImageType.performance: 'Cover Art (performance)',
        ImageType.screen_capture: 'Cover Art (movie scene)',
        ImageType.fish: 'Cover Art (colored fish)',
        ImageType.illustration: 'Cover Art (illustration)',
        ImageType.artist_logo: 'Cover Art (band logo)',
        ImageType.publisher_logo: 'Cover Art (publisher logo)',

class APEv2ImageStorageStyle(ListStorageStyle):
    """Store images in APEv2 tags. Values are `Image` objects.
    """
    formats = ['APEv2File', 'WavPack', 'Musepack', 'MonkeysAudio', 'OptimFROG']

    TAG_NAMES = {
        ImageType.other: 'Cover Art (other)',
        ImageType.icon: 'Cover Art (icon)',
        ImageType.other_icon: 'Cover Art (other icon)',
        ImageType.front: 'Cover Art (front)',
        ImageType.back: 'Cover Art (back)',
        ImageType.leaflet: 'Cover Art (leaflet)',
        ImageType.media: 'Cover Art (media)',
        ImageType.lead_artist: 'Cover Art (lead)',
        ImageType.artist: 'Cover Art (artist)',
        ImageType.conductor: 'Cover Art (conductor)',
        ImageType.group: 'Cover Art (band)',
        ImageType.composer: 'Cover Art (composer)',
        ImageType.lyricist: 'Cover Art (lyricist)',
        ImageType.recording_location: 'Cover Art (studio)',
        ImageType.recording_session: 'Cover Art (recording)',
        ImageType.performance: 'Cover Art (performance)',
        ImageType.screen_capture: 'Cover Art (movie scene)',
        ImageType.fish: 'Cover Art (colored fish)',
        ImageType.illustration: 'Cover Art (illustration)',
        ImageType.artist_logo: 'Cover Art (band logo)',
        ImageType.publisher_logo: 'Cover Art (publisher logo)',
    }

    def __init__(self):

ImageType.front: 'Cover Art (front)',
        ImageType.back: 'Cover Art (back)',
        ImageType.leaflet: 'Cover Art (leaflet)',
        ImageType.media: 'Cover Art (media)',
        ImageType.lead_artist: 'Cover Art (lead)',
        ImageType.artist: 'Cover Art (artist)',
        ImageType.conductor: 'Cover Art (conductor)',
        ImageType.group: 'Cover Art (band)',
        ImageType.composer: 'Cover Art (composer)',
        ImageType.lyricist: 'Cover Art (lyricist)',
        ImageType.recording_location: 'Cover Art (studio)',
        ImageType.recording_session: 'Cover Art (recording)',
        ImageType.performance: 'Cover Art (performance)',
        ImageType.screen_capture: 'Cover Art (movie scene)',
        ImageType.fish: 'Cover Art (colored fish)',
        ImageType.illustration: 'Cover Art (illustration)',
        ImageType.artist_logo: 'Cover Art (band logo)',
        ImageType.publisher_logo: 'Cover Art (publisher logo)',
    }

    def __init__(self):
        super(APEv2ImageStorageStyle, self).__init__(key='')

    def fetch(self, mutagen_file):
        images = []
        for cover_type, cover_tag in self.TAG_NAMES.items():
            try:
                frame = mutagen_file[cover_tag]
                text_delimiter_index = frame.value.find(b'\x00')
                if text_delimiter_index > 0:
                    comment = frame.value[0:text_delimiter_index]
                    comment = comment.decode('utf-8', 'replace')

formats = ['APEv2File', 'WavPack', 'Musepack', 'MonkeysAudio', 'OptimFROG']

    TAG_NAMES = {
        ImageType.other: 'Cover Art (other)',
        ImageType.icon: 'Cover Art (icon)',
        ImageType.other_icon: 'Cover Art (other icon)',
        ImageType.front: 'Cover Art (front)',
        ImageType.back: 'Cover Art (back)',
        ImageType.leaflet: 'Cover Art (leaflet)',
        ImageType.media: 'Cover Art (media)',
        ImageType.lead_artist: 'Cover Art (lead)',
        ImageType.artist: 'Cover Art (artist)',
        ImageType.conductor: 'Cover Art (conductor)',
        ImageType.group: 'Cover Art (band)',
        ImageType.composer: 'Cover Art (composer)',
        ImageType.lyricist: 'Cover Art (lyricist)',
        ImageType.recording_location: 'Cover Art (studio)',
        ImageType.recording_session: 'Cover Art (recording)',
        ImageType.performance: 'Cover Art (performance)',
        ImageType.screen_capture: 'Cover Art (movie scene)',
        ImageType.fish: 'Cover Art (colored fish)',
        ImageType.illustration: 'Cover Art (illustration)',
        ImageType.artist_logo: 'Cover Art (band logo)',
        ImageType.publisher_logo: 'Cover Art (publisher logo)',
    }

    def __init__(self):
        super(APEv2ImageStorageStyle, self).__init__(key='')

    def fetch(self, mutagen_file):
        images = []
        for cover_type, cover_tag in self.TAG_NAMES.items():