How to use the wand.compat.text function in Wand

def type(self):
        """(:class:`basestring`) The image type.

        Defines image type as in :const:`IMAGE_TYPES` enumeration.

        It may raise :exc:`ValueError` when the type is unknown.

        .. versionadded:: 0.2.2

        """
        image_type_index = library.MagickGetImageType(self.wand)
        if not image_type_index:
            self.raise_exception()
        return IMAGE_TYPES[text(image_type_index)]

characters. Default pattern '*' for all formats.
    :type pattern: :class:`basestring`
    :returns: Sequence of matching formats
    :rtype: :class:`collections.Sequence`
    """
    if not isinstance(pattern, string_type):
        raise TypeError('pattern must be a string, not ' + repr(pattern))
    pattern_p = ctypes.create_string_buffer(binary(pattern))
    number_formats = ctypes.c_size_t(0)
    formats = []
    formats_p = library.MagickQueryFormats(pattern_p,
                                           ctypes.byref(number_formats))
    cursor = 0
    while cursor < number_formats.value:
        value = formats_p[cursor].value
        formats.append(text(value))
        cursor += 1
    return formats

#:
    #: Set to empty string if the system uses an older version of
    #: ImageMagick-6, or does not support :c:func:`GetMagickDelegates`.
    #:
    #: .. versionadded:: 0.5.0
    if libmagick.GetMagickDelegates:  # pragma: no cover
        MAGICK_VERSION_DELEGATES = text(libmagick.GetMagickDelegates())
    else:  # pragma: no cover
        MAGICK_VERSION_DELEGATES = ""

    #: (:class:`basestring`) A string of all features enabled.
    #: This value is identical to what is returned by
    #: :c:func:`GetMagickFeatures`
    #:
    #: .. versionadded:: 0.5.0
    MAGICK_VERSION_FEATURES = text(libmagick.GetMagickFeatures())

    #: (:class:`tuple`) The version tuple e.g. ``(6, 7, 7, 6)`` of
    #: :const:`MAGICK_VERSION`.
    #:
    #: .. versionadded:: 0.2.1
    MAGICK_VERSION_INFO = tuple(int(v or 0) for v in _match.groups())

    #: (:class:`basestring`) The date string e.g. ``'2012-06-03'`` of
    #: :const:`MAGICK_RELEASE_DATE_STRING`.  This value is the exactly same
    #: string to the result of :c:func:`GetMagickReleaseDate` function.
    #:
    #: .. versionadded:: 0.2.1
    MAGICK_RELEASE_DATE_STRING = text(libmagick.GetMagickReleaseDate())

    if MAGICK_RELEASE_DATE_STRING:
        _match = re.match(r'^(\d{4})-?(\d\d)-?(\d\d)$',

#: .. versionadded:: 0.2.1
    MAGICK_VERSION_NUMBER = c_magick_version.value

    _match = re.match(r'^ImageMagick\s+(\d+)\.(\d+)\.(\d+)(?:-(\d+))?',
                      MAGICK_VERSION)

    #: (:class:`basestring`) A string of all delegates enabled.
    #: This value is identical to what is returned by
    #: :c:func:`GetMagickDelegates`
    #:
    #: Set to empty string if the system uses an older version of
    #: ImageMagick-6, or does not support :c:func:`GetMagickDelegates`.
    #:
    #: .. versionadded:: 0.5.0
    if libmagick.GetMagickDelegates:  # pragma: no cover
        MAGICK_VERSION_DELEGATES = text(libmagick.GetMagickDelegates())
    else:  # pragma: no cover
        MAGICK_VERSION_DELEGATES = ""

    #: (:class:`basestring`) A string of all features enabled.
    #: This value is identical to what is returned by
    #: :c:func:`GetMagickFeatures`
    #:
    #: .. versionadded:: 0.5.0
    MAGICK_VERSION_FEATURES = text(libmagick.GetMagickFeatures())

    #: (:class:`tuple`) The version tuple e.g. ``(6, 7, 7, 6)`` of
    #: :const:`MAGICK_VERSION`.
    #:
    #: .. versionadded:: 0.2.1
    MAGICK_VERSION_INFO = tuple(int(v or 0) for v in _match.groups())

:type pattern: :class:`basestring`
    :returns: Directory of configuration options matching given pattern
    :rtype: :class:`collections.defaultdict`
    """
    if not isinstance(pattern, string_type):
        raise TypeError('pattern must be a string, not ' + repr(pattern))
    pattern_p = ctypes.create_string_buffer(binary(pattern))
    config_count = ctypes.c_size_t(0)
    configs = {}
    configs_p = library.MagickQueryConfigureOptions(pattern_p,
                                                    ctypes.byref(config_count))
    cursor = 0
    while cursor < config_count.value:
        config = configs_p[cursor].value
        value = library.MagickQueryConfigureOption(config)
        configs[text(config)] = text(value.value)
        cursor += 1
    return configs

def __iter__(self):
        image = self.image
        num = ctypes.c_size_t()
        props_p = library.MagickGetImageProperties(image.wand, b'', num)
        props = [text(props_p[i]) for i in xrange(num.value)]
        library.MagickRelinquishMemory(props_p)
        return iter(props)

def __getitem__(self, color):
        if self.counts is None:
            string = library.PixelGetColorAsNormalizedString
            pixels = self.pixels
            count = library.PixelGetColorCount
            self.counts = dict(
                (text(string(pixels[i]).value), count(pixels[i]))
                for i in xrange(self.size.value)
            )
            del self.size, self.pixels
        return self.counts[color.normalized_string]

:type gravity: :class:`basestring`

        .. versionadded:: 0.3.0

        """
        if not isinstance(left, numbers.Integral):
            raise TypeError('left must be an integer, not ' + repr(left))
        elif not isinstance(top, numbers.Integral):
            raise TypeError('top must be an integer, not ' + repr(top))
        elif width is not None and not isinstance(width, numbers.Integral):
            raise TypeError('width must be an integer, not ' + repr(width))
        elif height is not None and not isinstance(height, numbers.Integral):
            raise TypeError('height must be an integer, not ' + repr(height))
        elif font is not None and not isinstance(font, Font):
            raise TypeError('font must be a wand.font.Font, not ' + repr(font))
        elif gravity is not None and compat.text(gravity) not in GRAVITY_TYPES:
            raise ValueError('invalid gravity value')
        if width is None:
            width = self.width - left
        if height is None:
            height = self.height - top
        with Image() as textboard:
            library.MagickSetSize(textboard.wand, width, height)
            textboard.font = font or self.font
            textboard.gravity = gravity or self.gravity
            with Color('transparent') as background_color:
                library.MagickSetBackgroundColor(textboard.wand,
                                                 background_color.resource)
            textboard.read(filename=b'caption:' + text.encode('utf-8'))
            self.composite(textboard, left, top)