Pillow/docs/deprecations.rst

.. _deprecations:

Deprecations and removals
=========================

This page lists Pillow features that are deprecated, or have been removed in
past major releases, and gives the alternatives to use instead.

Deprecated features
-------------------

Below are features which are considered deprecated. Where appropriate,
a ``DeprecationWarning`` is issued.

Tk/Tcl 8.4
~~~~~~~~~~

.. deprecated:: 8.2.0

Support for Tk/Tcl 8.4 is deprecated and will be removed in Pillow 10.0.0 (2023-07-01),
when Tk/Tcl 8.5 will be the minimum supported.

Categories
~~~~~~~~~~

.. deprecated:: 8.2.0

``im.category`` is deprecated and will be removed in Pillow 10.0.0 (2023-07-01),
along with the related ``Image.NORMAL``, ``Image.SEQUENCE`` and
``Image.CONTAINER`` attributes.

To determine if an image has multiple frames or not,
``getattr(im, "is_animated", False)`` can be used instead.

JpegImagePlugin.convert_dict_qtables
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 8.3.0

JPEG ``quantization`` is now automatically converted, but still returned as a
dictionary. The :py:attr:`~PIL.JpegImagePlugin.convert_dict_qtables` method no longer
performs any operations on the data given to it, has been deprecated and will be
removed in Pillow 10.0.0 (2023-07-01).

ImagePalette size parameter
~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 8.4.0

The ``size`` parameter will be removed in Pillow 10.0.0 (2023-07-01).

Before Pillow 8.3.0, ``ImagePalette`` required palette data of particular lengths by
default, and the size parameter could be used to override that. Pillow 8.3.0 removed
the default required length, also removing the need for the size parameter.

ImageShow.Viewer.show_file file argument
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 9.1.0

The ``file`` argument in :py:meth:`~PIL.ImageShow.Viewer.show_file()` has been
deprecated and will be removed in Pillow 10.0.0 (2023-07-01). It has been replaced by
``path``.

In effect, ``viewer.show_file("test.jpg")`` will continue to work unchanged.
``viewer.show_file(file="test.jpg")`` will raise a deprecation warning, and suggest
``viewer.show_file(path="test.jpg")`` instead.

Constants
~~~~~~~~~

.. deprecated:: 9.1.0

A number of constants have been deprecated and will be removed in Pillow 10.0.0
(2023-07-01). Instead, ``enum.IntEnum`` classes have been added.

=====================================================  ============================================================
Deprecated                                             Use instead
=====================================================  ============================================================
``Image.NONE``                                         Either ``Image.Dither.NONE`` or ``Image.Resampling.NEAREST``
``Image.NEAREST``                                      Either ``Image.Dither.NONE`` or ``Image.Resampling.NEAREST``
``Image.ORDERED``                                      ``Image.Dither.ORDERED``
``Image.RASTERIZE``                                    ``Image.Dither.RASTERIZE``
``Image.FLOYDSTEINBERG``                               ``Image.Dither.FLOYDSTEINBERG``
``Image.WEB``                                          ``Image.Palette.WEB``
``Image.ADAPTIVE``                                     ``Image.Palette.ADAPTIVE``
``Image.AFFINE``                                       ``Image.Transform.AFFINE``
``Image.EXTENT``                                       ``Image.Transform.EXTENT``
``Image.PERSPECTIVE``                                  ``Image.Transform.PERSPECTIVE``
``Image.QUAD``                                         ``Image.Transform.QUAD``
``Image.MESH``                                         ``Image.Transform.MESH``
``Image.FLIP_LEFT_RIGHT``                              ``Image.Transpose.FLIP_LEFT_RIGHT``
``Image.FLIP_TOP_BOTTOM``                              ``Image.Transpose.FLIP_TOP_BOTTOM``
``Image.ROTATE_90``                                    ``Image.Transpose.ROTATE_90``
``Image.ROTATE_180``                                   ``Image.Transpose.ROTATE_180``
``Image.ROTATE_270``                                   ``Image.Transpose.ROTATE_270``
``Image.TRANSPOSE``                                    ``Image.Transpose.TRANSPOSE``
``Image.TRANSVERSE``                                   ``Image.Transpose.TRANSVERSE``
``Image.BOX``                                          ``Image.Resampling.BOX``
``Image.BILINEAR``                                     ``Image.Resampling.BILNEAR``
``Image.LINEAR``                                       ``Image.Resampling.BILNEAR``
``Image.HAMMING``                                      ``Image.Resampling.HAMMING``
``Image.BICUBIC``                                      ``Image.Resampling.BICUBIC``
``Image.CUBIC``                                        ``Image.Resampling.BICUBIC``
``Image.LANCZOS``                                      ``Image.Resampling.LANCZOS``
``Image.ANTIALIAS``                                    ``Image.Resampling.LANCZOS``
``Image.MEDIANCUT``                                    ``Image.Quantize.MEDIANCUT``
``Image.MAXCOVERAGE``                                  ``Image.Quantize.MAXCOVERAGE``
``Image.FASTOCTREE``                                   ``Image.Quantize.FASTOCTREE``
``Image.LIBIMAGEQUANT``                                ``Image.Quantize.LIBIMAGEQUANT``
``ImageCms.INTENT_PERCEPTUAL``                         ``ImageCms.Intent.PERCEPTUAL``
``ImageCms.INTENT_RELATIVE_COLORMETRIC``               ``ImageCms.Intent.RELATIVE_COLORMETRIC``
``ImageCms.INTENT_SATURATION``                         ``ImageCms.Intent.SATURATION``
``ImageCms.INTENT_ABSOLUTE_COLORIMETRIC``              ``ImageCms.Intent.ABSOLUTE_COLORIMETRIC``
``ImageCms.DIRECTION_INPUT``                           ``ImageCms.Direction.INPUT``
``ImageCms.DIRECTION_OUTPUT``                          ``ImageCms.Direction.OUTPUT``
``ImageCms.DIRECTION_PROOF``                           ``ImageCms.Direction.PROOF``
``ImageFont.LAYOUT_BASIC``                             ``ImageFont.Layout.BASIC``
``ImageFont.LAYOUT_RAQM``                              ``ImageFont.Layout.RAQM``
``BlpImagePlugin.BLP_FORMAT_JPEG``                     ``BlpImagePlugin.Format.JPEG``
``BlpImagePlugin.BLP_ENCODING_UNCOMPRESSED``           ``BlpImagePlugin.Encoding.UNCOMPRESSED``
``BlpImagePlugin.BLP_ENCODING_DXT``                    ``BlpImagePlugin.Encoding.DXT``
``BlpImagePlugin.BLP_ENCODING_UNCOMPRESSED_RAW_RGBA``  ``BlpImagePlugin.Encoding.UNCOMPRESSED_RAW_RGBA``
``BlpImagePlugin.BLP_ALPHA_ENCODING_DXT1``             ``BlpImagePlugin.AlphaEncoding.DXT1``
``BlpImagePlugin.BLP_ALPHA_ENCODING_DXT3``             ``BlpImagePlugin.AlphaEncoding.DXT3``
``BlpImagePlugin.BLP_ALPHA_ENCODING_DXT5``             ``BlpImagePlugin.AlphaEncoding.DXT5``
``FtexImagePlugin.FORMAT_DXT1``                        ``FtexImagePlugin.Format.DXT1``
``FtexImagePlugin.FORMAT_UNCOMPRESSED``                ``FtexImagePlugin.Format.UNCOMPRESSED``
``PngImagePlugin.APNG_DISPOSE_OP_NONE``                ``PngImagePlugin.Disposal.OP_NONE``
``PngImagePlugin.APNG_DISPOSE_OP_BACKGROUND``          ``PngImagePlugin.Disposal.OP_BACKGROUND``
``PngImagePlugin.APNG_DISPOSE_OP_PREVIOUS``            ``PngImagePlugin.Disposal.OP_PREVIOUS``
``PngImagePlugin.APNG_BLEND_OP_SOURCE``                ``PngImagePlugin.Blend.OP_SOURCE``
``PngImagePlugin.APNG_BLEND_OP_OVER``                  ``PngImagePlugin.Blend.OP_OVER``
=====================================================  ============================================================

FitsStubImagePlugin
~~~~~~~~~~~~~~~~~~~

.. deprecated:: 9.1.0

The stub image plugin ``FitsStubImagePlugin`` has been deprecated and will be removed in
Pillow 10.0.0 (2023-07-01). FITS images can be read without a handler through
:mod:`~PIL.FitsImagePlugin` instead.

PhotoImage.paste box parameter
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 9.2.0

The ``box`` parameter is unused. It will be removed in Pillow 10.0.0 (2023-07-01).

Removed features
----------------

Deprecated features are only removed in major releases after an appropriate
period of deprecation has passed.

PILLOW_VERSION constant
~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 5.2.0
.. versionremoved:: 9.0.0

Use ``__version__`` instead.

It was initially removed in Pillow 7.0.0, but temporarily brought back in 7.1.0
to give projects more time to upgrade.

Image.show command parameter
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 7.2.0
.. versionremoved:: 9.0.0

The ``command`` parameter has been removed. Use a subclass of
:py:class:`.ImageShow.Viewer` instead.

Image._showxv
~~~~~~~~~~~~~

.. deprecated:: 7.2.0
.. versionremoved:: 9.0.0

Use :py:meth:`.Image.Image.show` instead. If custom behaviour is required, use
:py:func:`.ImageShow.register` to add a custom :py:class:`.ImageShow.Viewer` class.

ImageFile.raise_ioerror
~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 7.2.0
.. versionremoved:: 9.0.0

``IOError`` was merged into ``OSError`` in Python 3.3.
So, ``ImageFile.raise_ioerror`` has been removed.
Use ``ImageFile.raise_oserror`` instead.

FreeType 2.7
~~~~~~~~~~~~

.. deprecated:: 8.1.0
.. versionremoved:: 9.0.0

Support for FreeType 2.7 has been removed.

We recommend upgrading to at least `FreeType`_ 2.10.4, which fixed a severe
vulnerability introduced in FreeType 2.6 (:cve:`CVE-2020-15999`).

.. _FreeType: https://www.freetype.org

im.offset
~~~~~~~~~

.. deprecated:: 1.1.2
.. versionremoved:: 8.0.0

``im.offset()`` has been removed, call :py:func:`.ImageChops.offset()` instead.

It was documented as deprecated in PIL 1.1.2,
raised a ``DeprecationWarning`` since 1.1.5,
an ``Exception`` since Pillow 3.0.0
and ``NotImplementedError`` since 3.3.0.

Image.fromstring, im.fromstring and im.tostring
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 2.0.0
.. versionremoved:: 8.0.0

* ``Image.fromstring()`` has been removed, call :py:func:`.Image.frombytes()` instead.
* ``im.fromstring()`` has been removed, call :py:meth:`~PIL.Image.Image.frombytes()` instead.
* ``im.tostring()`` has been removed, call :py:meth:`~PIL.Image.Image.tobytes()` instead.

They issued a ``DeprecationWarning`` since 2.0.0,
an ``Exception`` since 3.0.0
and ``NotImplementedError`` since 3.3.0.

ImageCms.CmsProfile attributes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 3.2.0
.. versionremoved:: 8.0.0

Some attributes in :py:class:`PIL.ImageCms.CmsProfile` have been removed. From 6.0.0,
they issued a ``DeprecationWarning``:

========================  ===================================================
Removed                   Use instead
========================  ===================================================
``color_space``           Padded :py:attr:`~.CmsProfile.xcolor_space`
``pcs``                   Padded :py:attr:`~.CmsProfile.connection_space`
``product_copyright``     Unicode :py:attr:`~.CmsProfile.copyright`
``product_desc``          Unicode :py:attr:`~.CmsProfile.profile_description`
``product_description``   Unicode :py:attr:`~.CmsProfile.profile_description`
``product_manufacturer``  Unicode :py:attr:`~.CmsProfile.manufacturer`
``product_model``         Unicode :py:attr:`~.CmsProfile.model`
========================  ===================================================

Python 2.7
~~~~~~~~~~

.. deprecated:: 6.0.0
.. versionremoved:: 7.0.0

Python 2.7 reached end-of-life on 2020-01-01. Pillow 6.x was the last series to
support Python 2.

Image.__del__
~~~~~~~~~~~~~

.. deprecated:: 6.1.0
.. versionremoved:: 7.0.0

Implicitly closing the image's underlying file in ``Image.__del__`` has been removed.
Use a context manager or call ``Image.close()`` instead to close the file in a
deterministic way.

Previous method:

.. code-block:: python

    im = Image.open("hopper.png")
    im.save("out.jpg")

Use instead:

.. code-block:: python

    with Image.open("hopper.png") as im:
        im.save("out.jpg")

PIL.*ImagePlugin.__version__ attributes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 6.0.0
.. versionremoved:: 7.0.0

The version constants of individual plugins have been removed. Use ``PIL.__version__``
instead.

===============================  =================================  ==================================
Removed                          Removed                            Removed
===============================  =================================  ==================================
``BmpImagePlugin.__version__``   ``Jpeg2KImagePlugin.__version__``  ``PngImagePlugin.__version__``
``CurImagePlugin.__version__``   ``JpegImagePlugin.__version__``    ``PpmImagePlugin.__version__``
``DcxImagePlugin.__version__``   ``McIdasImagePlugin.__version__``  ``PsdImagePlugin.__version__``
``EpsImagePlugin.__version__``   ``MicImagePlugin.__version__``     ``SgiImagePlugin.__version__``
``FliImagePlugin.__version__``   ``MpegImagePlugin.__version__``    ``SunImagePlugin.__version__``
``FpxImagePlugin.__version__``   ``MpoImagePlugin.__version__``     ``TgaImagePlugin.__version__``
``GdImageFile.__version__``      ``MspImagePlugin.__version__``     ``TiffImagePlugin.__version__``
``GifImagePlugin.__version__``   ``PalmImagePlugin.__version__``    ``WmfImagePlugin.__version__``
``IcoImagePlugin.__version__``   ``PcdImagePlugin.__version__``     ``XbmImagePlugin.__version__``
``ImImagePlugin.__version__``    ``PcxImagePlugin.__version__``     ``XpmImagePlugin.__version__``
``ImtImagePlugin.__version__``   ``PdfImagePlugin.__version__``     ``XVThumbImagePlugin.__version__``
``IptcImagePlugin.__version__``  ``PixarImagePlugin.__version__``
===============================  =================================  ==================================

PyQt4 and PySide
~~~~~~~~~~~~~~~~

.. deprecated:: 6.0.0
.. versionremoved:: 7.0.0

Qt 4 reached end-of-life on 2015-12-19. Its Python bindings are also EOL: PyQt4 since
2018-08-31 and PySide since 2015-10-14.

Support for PyQt4 and PySide has been removed  from ``ImageQt``. Please upgrade to PyQt5
or PySide2.

Setting the size of TIFF images
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 5.3.0
.. versionremoved:: 7.0.0

Setting the size of a TIFF image directly (eg. ``im.size = (256, 256)``) throws
an error. Use ``Image.resize`` instead.

VERSION constant
~~~~~~~~~~~~~~~~

.. deprecated:: 5.2.0
.. versionremoved:: 6.0.0

``VERSION`` (the old PIL version, always 1.1.7) has been removed. Use
``__version__`` instead.

Undocumented ImageOps functions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. deprecated:: 4.3.0
.. versionremoved:: 6.0.0

Several undocumented functions in ``ImageOps`` have been removed. Use the equivalents
in ``ImageFilter`` instead:

==========================  ============================
Removed                     Use instead
==========================  ============================
``ImageOps.box_blur``       ``ImageFilter.BoxBlur``
``ImageOps.gaussian_blur``  ``ImageFilter.GaussianBlur``
``ImageOps.gblur``          ``ImageFilter.GaussianBlur``
``ImageOps.usm``            ``ImageFilter.UnsharpMask``
``ImageOps.unsharp_mask``   ``ImageFilter.UnsharpMask``
==========================  ============================

PIL.OleFileIO
~~~~~~~~~~~~~

.. deprecated:: 4.0.0
.. versionremoved:: 6.0.0

PIL.OleFileIO was removed as a vendored file in Pillow 4.0.0 (2017-01) in favour of
the upstream olefile Python package, and replaced with an ``ImportError`` in 5.0.0
(2018-01). The deprecated file has now been removed from Pillow. If needed, install from
PyPI (eg. ``python3 -m pip install olefile``).