mirror of
https://github.com/python-pillow/Pillow.git
synced 2025-11-04 01:47:47 +03:00
107 lines
3.6 KiB
ReStructuredText
107 lines
3.6 KiB
ReStructuredText
5.0.0
|
|
-----
|
|
|
|
Backwards Incompatible Changes
|
|
==============================
|
|
|
|
Python 3.3 Dropped
|
|
^^^^^^^^^^^^^^^^^^
|
|
|
|
Python 3.3 is EOL and no longer supported due to moving testing from nose,
|
|
which is deprecated, to pytest, which doesn't support Python 3.3. We will not
|
|
be creating binaries, testing, or retaining compatibility with this version.
|
|
The final version of Pillow for Python 3.3 is 4.3.0.
|
|
|
|
Decompression Bombs now raise Exceptions
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
Pillow has previously emitted warnings for images that are
|
|
unexpectedly large and may be a denial of service. These warnings are
|
|
now upgraded to ``DecompressionBombError``\s for images that are twice
|
|
the size of images that trigger the ``DecompressionBombWarning``. The
|
|
default threshold is 128Mpx, or 0.5GB for an ``RGB`` or ``RGBA``
|
|
image. This can be disabled or changed by setting
|
|
``Image.MAX_IMAGE_PIXELS = None``.
|
|
|
|
Scripts
|
|
^^^^^^^
|
|
|
|
The scripts formerly installed by Pillow have been split into a
|
|
separate package, pillow-scripts, living at
|
|
https://github.com/python-pillow/pillow-scripts.
|
|
|
|
|
|
API Changes
|
|
===========
|
|
|
|
OleFileIO.py
|
|
^^^^^^^^^^^^
|
|
|
|
The :pypi:`olefile` module is no longer a required dependency when installing Pillow.
|
|
Support for plugins requiring olefile will not be loaded if it is not
|
|
installed. This allows library consumers to avoid installing this dependency
|
|
if they choose. Some library consumers have little interest in the format
|
|
support and would like to keep dependencies to a minimum.
|
|
|
|
Further, the vendored version was removed in Pillow 4.0.0 and replaced with a
|
|
deprecation warning that PIL.OleFileIO would be removed in a future version.
|
|
This warning has been upgraded to an import error pending future removal.
|
|
|
|
Check parameter on _save
|
|
^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
Several image plugins supported a named ``check`` parameter on their
|
|
nominally private ``_save`` method to preflight if the image could be
|
|
saved in that format. That parameter has been removed.
|
|
|
|
API Additions
|
|
=============
|
|
|
|
Image.transform
|
|
^^^^^^^^^^^^^^^
|
|
|
|
A new named parameter, ``fillcolor``, has been added to
|
|
``Image.transform``. This color specifies the background color to use in
|
|
the area outside the transformed area in the output image. This
|
|
parameter takes the same color specifications as used in ``Image.new``.
|
|
|
|
GIF Disposal
|
|
^^^^^^^^^^^^
|
|
|
|
Multiframe GIF images now take an optional disposal parameter to
|
|
specify the disposal option for changed pixels.
|
|
|
|
Other Changes
|
|
=============
|
|
|
|
Compressed TIFF Images
|
|
^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
Previously, there were some compression modes (JPEG, Packbits, and
|
|
LZW) that were supported with Pillow's internal TIFF decoder. All
|
|
compressed TIFFs are now read using the ``libtiff`` decoder, as it
|
|
implements the compression schemes more correctly.
|
|
|
|
Libraqm is now Dynamically Linked
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
The libraqm dependency for complex text scripts is now linked
|
|
dynamically at runtime rather than at packaging time. This allows us
|
|
to release binaries with support for libraqm if it is installed on the
|
|
user's machine.
|
|
|
|
Source Layout Changes
|
|
^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
The Pillow source is now stored within the ``src`` directory of the
|
|
distribution. This prevents accidental imports of the PIL directory
|
|
when running Python from the project directory.
|
|
|
|
Setup.py Changes
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
Multiarch support on Linux should be more robust, especially on Debian
|
|
derivatives on ARM platforms. Debian's multiarch platform
|
|
configuration is run in preference to the sniffing of machine platform
|
|
and architecture.
|