v4.2

• Add bindings to the BusinessChat framework introduced in macOS 10.13.4

• Update metadata for Xcode 9.3

• Issue #233 Fix crash in Security.AuthorizationCopyRights() wrapper

• Issue #234 Fix crash in AuthorizationExecuteWithPrivileges() wrapper

  Reported by Vangelis Koukis

• Ensure doctest can work with modules containing subclasses of NSObject

  Reported by Just van Rossum

• Issue #236 : Importing can sometimes fail in multi-threaded scenarios

  Fix by Max Bélanger

• Undeprecate treating struct wrappers as sequences. Removing this feature would
  break too much existing code, hence deprecating is not really an option. Furthermore,
  this would also break some nice idioms.

• Pull request #17: Fix python 3 issues in PyObjCTools.AppHelper and PyObjCTools.Conversion

  Fix by Max Bélanger

v4.1

• Protection agains buffer overflow and negative indexes in
  __getitem__ and __setitem__ for objc.varlist instances.

• Fix incorrect metadata for +[NSEvent addLocalMonitorForEventsMatchingMask:handler:]

• Fix incorrect and misleading error message in the exception
  that is raised when return a value from a block that should not
  return a value.

• Issue #223: Fix hard crash when executing help(Cocoa)

  Fetching the help for PyObjC framework wrappers isn't very useful due
  to the sheer size of the output (4.5 million lines of output for
  help(Cocoa) at the moment), but shouldn't cause a hard crash of
  the interpreter.

  Reported by Dave Fuller

• Issue #218: Explictly cause an ImportError when reloading objc._objc

  Reloading the PyObjC core extension now raises an ImportError because
  this cannot work and used to raise a rather vague error.

• Updated metadata for Xcode 9.2

• Added missing MAC_OS_X_VERSION_* constants

• Fix memory error in struct wrappers which resulted in
  a use-after-free error in the initializer for structs.

• #135: Add bindings for frameworks :doc:Security </apinotes/Security>,
  :doc:SecurityFoundation </apinotes/SecurityFoundation> and
  and :doc:SecurityInterface </apinotes/SecurityInterface>.

  The bindings for the Security framework don't expose a
  number of older APIs that were deprecated in macOS 10.7.

• #129: Add bindings to libdispatch.

  These bindings require macOS 10.8 or later, libdispatch was
  available earlier but macOS 10.8 changed the API in such a
  way that wrapping became a lot easier.

v4.0.1

• Issue #213: Fix signature for -[NSObject forwardInvocation:]

  Reported by user "pyrocat"

• Updated metadata for Xcode 9.1

• Changes to PyObjCTools.TestSupport to be able to include/exclude tests
  based on the minor release of macOS.

• Some tweaks to fix test failures when running on OSX 10.5, 10.6, 10.9.

NOTE:

The stacktrace formatting of in PyObjCTools.Debugging (from the
ExceptionHandling bindings) don't work for PPC binaries because symbol
resolution doesn't work.

This is a known issue that won't be fixed.

v4.0

• Issue #204: Metadata for CGPDFDictionaryGetObject was wrong

  Reported by Nickolas Pohilets.

• Updated metadata for Xcode 9 GM.

• Fix #202: Add bindings for CGPDFDictionaryRef, CGPDFScannerRef
CGPDFStreamRef and CGPDFStringRef to the Quartz bindings (including
  some minor updates to function metadata)

  Reported by Nickolas Pohilets.

• Issue #205: Add ability to read bytes from objc.varlist

  Instances of objc.varlist now have a method to return a memoryview
  that refers to the first section of the list::

  def as_buffer(self, count : int) -> memoryview

  This returns a memoryview the references the underlying memory for
  the first count elements in the list.

  Reported by Nickolas Pohilets.

• Added bindings for the :doc:GameKit </apinotes/GameKit> framework introduced in macOS 10.8.

• Added bindings for the :doc:GameplayKit </apinotes/GameplayKit> framework introduced in macOS 10.11.

  Note that these bindings are less useful than they could be because
  PyObjC currently does not support "vector" types that are used in
  some APIs.

v4.0b1

• Removed PyObjCTools.TestSupport.filterWarnings, use warnings.catch_warnings
  instead.

• Building pyobjc-core using "python setup.py develop" will use 'ccache'
  when available.

• Building pyobjc-core will compile the source files from new to old files,
  to speed up feedback while working on the source code.

• Legacy BridgeSupport files on macOS 10.13 (which aren't used by default
  by PyObjC) can contain junk data in typestring data. Cleanup that data
  before using it.

• Deal with loading bundle variables of a C string type, that used to crash
  to do an oddity of locating that information.

• Using wrappers for C structs as sequences is deprecated, this
  feature was introduced a long while ago when the framework wrappers
  were very incomplete and is no longer usefull.

• Add objc.options.structs_indexable. When this option is True
  (the default) wrappers for C structs behave as before, when the
  option is False these wrappers can no longer be used as writable
  tuples, that is all "sequence" methods will raise TypeError.

• Add objc.options.structs_writable. When this option is True
  (the default) wrappers for C structs behave as before, when the
  option is False these wrappers can no longer be modified.

• Add availability macro MAC_OS_X_VERSION_10_13 to objc.

• New framework wrappers:

  • :doc:ColorSync </apinotes/ColorSync> (new in macOS 10.13)
  • :doc:CoreML </apinotes/CoreML> (new in macOS 10.13)
  • :doc:ExternalAccessory </apinotes/ExternalAccessory> (new in macOS 10.13)
  • :doc:CoreSpotlight </apinotes/CoreSpotlight> (new in macOS 10.13)
  • :doc:Vision </apinotes/Vision> (new in macOS 10.13)

• metadata updates:

  • :doc:Accounts </apinotes/Accounts>
  • :doc:AddressBook </apinotes/AddressBook>
  • :doc:AppKit </apinotes/AppKit>
  • :doc:ApplicationServices </apinotes/ApplicationServices>
  • :doc:Automator </apinotes/Automator>
  • :doc:AVKit </apinotes/AVKit>
  • :doc:CalendarStore </apinotes/CalendarStore>
  • :doc:CFNetwork </apinotes/CFNetwork>
  • :doc:CloudKit </apinotes/CloudKit>
  • :doc:Contacts </apinotes/Contacts>
  • :doc:CoreBluetooth </apinotes/CoreBluetooth>
  • :doc:CoreData </apinotes/CoreData>
  • :doc:CoreFoundation </apinotes/CoreFoundation>
  • :doc:CoreGraphics </apinotes/CoreGraphics>
  • :doc:CoreImage </apinotes/CoreImage>
  • :doc:CoreLocation </apinotes/CoreLocation>
  • :doc:CoreServices </apinotes/CoreServices>
  • :doc:CoreText </apinotes/CoreText>
  • :doc:CoreVideo </apinotes/CoreVideo>
  • :doc:CoreWLAN </apinotes/CoreWLAN>
  • :doc:CryptoTokenKit </apinotes/CryptoTokenKit>
  • :doc:EventKit </apinotes/EventKit>
  • :doc:FinderSync </apinotes/FinderSync>
  • :doc:Foundation </apinotes/Foundation>
  • :doc:FSEvents </apinotes/FSEvents>
  • :doc:GameController </apinotes/GameController>
  • :doc:IMServicePlugIn </apinotes/IMServicePlugIn>
  • :doc:ImageCaptureCore </apinotes/ImageCaptureCore>
  • :doc:ImageIO </apinotes/ImageIO>
  • :doc:Intents </apinotes/Intents>
  • :doc:IOSurface </apinotes/IOSurface>
  • :doc:JavaScriptCore </apinotes/JavaScriptCore>
  • :doc:LocalAuthentication </apinotes/LocalAuthentication>
  • :doc:MapKit </apinotes/MapKit>
  • :doc:MediaLibrary </apinotes/MediaLibrary>
  • :doc:MediaPlayer </apinotes/MediaPlayer>
  • :doc:ModelIO </apinotes/ModelIO>
  • :doc:MultipeerConnectivity </apinotes/MultipeerConnectivity>
  • :doc:NetFS </apinotes/NetFS>
  • :doc:NetworkExtension </apinotes/NetworkExtension>
  • :doc:OpenDirectory </apinotes/OpenDirectory>
  • :doc:Photos </apinotes/Photos>
  • :doc:PhotosUI </apinotes/PhotosUI>
  • :doc:QTKit </apinotes/QTKit>
  • :doc:Quartz </apinotes/Quartz>
  • :doc:QuartzCore </apinotes/QuartzCore>
  • :doc:QuickLook </apinotes/QuickLook>
  • :doc:SafariServices </apinotes/SafariServices>
  • :doc:SceneKit </apinotes/SceneKit>
  • :doc:ScreenSaver </apinotes/ScreenSaver>
  • :doc:Social </apinotes/Social>
  • :doc:SpriteKit </apinotes/SpriteKit>
  • :doc:SystemConfiguration </apinotes/SystemConfiguration>
  • :doc:WebKit </apinotes/WebKit>

v3.2.1

Updates:

• Small change to the shared setup.py code for framework wrappers to allow
  building wheels for wrappers without a C exention on any system.

  This was mostly done to make it easier to provide wheels in future releases.

Bugfixes:

• Avoid build error with Python 2.7 when using the OSX 10.12 SDK, triggered
  when Python was build using MacPython support.

• Compatibility definitions for MAC_OS_X_VERSION_10_10, MAC_OS_X_VERSION_10_11
  and MAC_OS_X_VERSION_10_12 were wrong, adjusted these.

• Fix obscure crash in test suite of pyobjc-core: the definition of a class
  that claims to conform to a protocol but didn't actually conform could
  result in having a partial class definition in the Objective-C runtime.

• Updated implementation for NSMutableArray.extend. This both avoids an
  error with the list interface tests in Python 3.6, and avoids unnecessary
  memory usage with large arguments.

v3.2

Backward compatibility note: Due to a change in the way the default
method signature is calculated PyObjC is now more strict in enforcing
the Python<->Objective-C mapping for selectors and a number of code patterns
that were allowed before are no longer allowed, in particular the following
method definitions raise objc.BadPrototypeError::

class MyObject (NSObject):
def mymethod(self, a, b): ...
def method_arg_(self, a, b, c): ...

If these methods are only used from Python and are never used from Objective-C
the error can be avoided by decorating these methods with objc.python_method::

class MyObject (NSObject):
@objc.python_method
def mymethod(self, a, b): ...

This cannnot be used for methods used from Objective-C, for those you will
have to rename the method or you will have to provide an appropriate selector
explictly.

• Fix crash when using some APIs in the LaunchServices framework.

• Issue #100:Building with the Command Line Tools for Xcode installed caused build errors
  on OSX 10.10

• Python 3.6 made a change to the bytecode format that affected the way
  PyObjC calculates the default method signature for Python methods.

  Earlier versions of PyObjC will therefore not work properly with Python 3.6.

• Update metadata for macOS 10.12.1

  Note: Building PyObjC on macOS 10.12 requires Xcode 8.1 (or a later version)

• Added bindings for the SafariServices and Intents frameworks, both introducted in macOS 10.12.

• Added bindings for the MediaPlayer framework, introducted in macOS 10.12.1.

• Add bindings for the ModelIO framework, introduced in OSX 10.11.

• Issue #153: Add missing metadata file to ApplicationServices bindings

• Issue #157: Bad reference to "_metadata" in ApplicationServices bindings

• ApplicationServices framework didn't do "from ... import *" as was intended.

• Don't force the installation of py2app.

• Fix build failure using the OSX 10.10 SDK.

• Issue #21: Tweak build procedure for PyObjC to avoid building pyobjc-core
  multiple times when using pip install pyobjc.

• Issue #123: Use Twisted's cfreactor module in the examples using Twisted.

• Issue #148: Fix build issue for the MapKit bindings on a case
  sensitive filesystem.

• Added bindings for the IOSurface framework (pyobjc-framework-IOSurface)

• Added bindings for the NetworkExtension framework (pyobjc-framework-NetworkExtension)

• Issue #149: Fix compile problems with Anaconda

• Fix SystemError for accessing a method whose __metadata__ cannot be calculated,
  found while researching issue #122.

• Issue #146: Don't hang when running python setup.py build using PyPy.

  Note that PyPy still doesn't work, this just ensures that the build fails instead
  of hanging indefinely.

• Issue #143: Fix calculation of default type signature for selectors

  Due to this change it is possible to use decorators like this::

  def decorator(func):
  @functools.wraps(func)
  def wrapper(*args, **kwds):
  return func(*args, **kwds)
  return decorator

  Before this patch PyObjC gave an error due to the signature of wrapper,
  and if wrapper was defined with an explicit self argument PyObjC would
  not give an error but would calculate the wrong method signature for wrapped
  methods.

  An unfortunate side effect of this change is that the argument count
  of methods must now match the implied argument count of the selector, that is
  a method with name someMethod_ must now have exactly two arguments (self
  and the argument implied by the underscore at the end).

  Use objc.python_method as a decorator for python methods that don't use
  this convention and do no need to be registered with the Objective-C runtime
  as Objective-C selectors.

• The bridge now considers the default arguments for a function when determining
  if the Python signature of a function is compatible with the Objective-C
  signature, that is the following method definition is valid::

  class MyObject (NSObject):
  def someMethod_(self, a, b=2): pass

• The default selector calculated for Python methods with embedded underscores and
  without a closing underscore has changed, the embedded underscores are not translated
  to colons because the resulting Objective-C selector would not be valid.

  That is, in earlier versions the default selector for "some_method" would be
  "some:method", and from this version on the default for selector for this
  method is "some_method".

• (Python 3) Methods and functions with keyword-only arguments that don't have defaults
  cause a objc.BadPrototypeError exception when proxied to Objective-C
  because those can never be called from Objective-C without causing an
  exception.

v3.1

• Fix value of FLT_MAX and FLT_MIN in framework bindings.

• Fix for the functions in PyObjCTools.AppHelper: those functions didn't work
  correctly when the calling thread didn't have a runloop.

  Patch by Max Bélanger.

• Issue #126: Load the LaunchServices definitions through the CoreServices
  umbrella framework to avoid problems on OSX 10.11.

• Issue #124: Sporadic crash at program shutdown due to a race condition between
  Python interpreter shutdown and Cocoa cleanup.

  This is mostly a workaround, I don't have a full solution for this yet and
  I'm not sure if one is possible.

• Added objc.PyObjC_BUILD_RELEASE which contains the version of the SDK
  that was used to build PyObjC in the same format as the OSX availability
  macros.

• Added maxTimeout parameter to PyObjCTools.AppHelper.runConsoleEventLoop
  to fix issue #117. The default value is 3 seconds, which means that
  the console eventloop will stop within 3 seconds of calling stopEventLoop.

• Re-enable faster method calls for simple method calls.

• Support OSX 10.10 in PyObjCTools.TestSupport (version comparison was too
  naive)

• Add bindings for ApplicationServices, currently only the HIServices sub
  framework is exposed.

• Add bindings for NetFS, introduced in OSX 10.7.

• Add bindings for ImageCaptureCore. Initial patch by Max Bélanger.

• Add bindings for IMServicePlugIn, introduced in OSX 10.7.

• Add bindings for SceneKit, introduced in OSX 10.8.

• Add bindings for CoreBluetooth, MapKit, AVKit, MediaLibrary,
  MediaAccessibility, GameController (all new in OSX 10.9)

• Add bindings for FinderSync, CloudKit, CryptoTokenKit,
  MultipeerConnectivity, NotificationCenter (all new in OSX 10.10)

• Add bindings for Contacts, ContactsUI, Photos, PhotosUI (new in OSX 10.11)

• Added function objc.callbackPointer.

• Updated bindings for AppKit, CoreData, CoreFoundation, CoreGraphics,
  CoreLocation, CoreText, CoreVideo, CoreWLAN, EventKit, FSEvents,
  ImageIO, ImageKit, JavaScriptCore, LaunchServices, OpenDirectory,
  PDFKit, QuartzComposer, QuartzCore, QuartzFilters, QuickLookUI,
  ServiceManagement, Social, StoreKit and WebKit with the new APIs
  introduced in OSX 10.9, 10.10 and 10.11.

• Unchanged framework bindings: Collaboration, DictionaryServices,
  ExceptionHandling, InputMethodKit, InstallerPlugins, InstantMessage,
  InterfaceBuilderKit, LatentSemanticMapping, PreferencePanes, PubSub.

  .. note::

  InterfaceBuilderKit will likely be removed in a future version of PyObjC

• TODO: DiskArbitration, GameController, SpriteKit bindings are incomplete

• Fix hard crash with invalid type strings in metadata.

• Default value for struct wrappers was incorrect for fields that have
  a type encoding that's custom to PyObjC.

• Fix a type string validation error that could cause PyObjC to continue
  processing beyond the end of a type string (which can effectively hang
  the python interpreter with 100% CPU usage)

• Fix edge-case in NSCoding support that causes PyObjC to use proxy objects
  of the wrong type in some cases.

• Fix incompatibility with Python 3.6 (where inspect.getargspec no longer
  exists)

• Added (private) function objc._copyMetadataRegistry. This function returns
  a copy of the internal registry that's used to find additional information
  about method signatures.

  Note that the data structure returned by this function is subject to change,
  that the data structure is undocumented and that modifying it does not affect
  the data used by PyObjC.

v3.0.4

• Fix installation on OSX 10.10 when using "pip install pyobjc".

  Issues #102, #103.

• Fix crash when sys.modules contains an object that is not a string.

  Issue #95.

• Fix crash on OSX 10.8 or later when using a 32-bit build and accessing
  an instance of "Object" (that is, pre-Nextstep classes).

• Fix a crash when using blocks without metadata, but with a block
  signature from the block runtime.

  Issue #106

• PyObjCTools.MachSignals likely hasn't worked at all since PyObjC 2.0
  because it uses a C module that was never ported to PyObjC 2.0. This private
  module is reintroduced in this release (with a slightly changed API)

  Issue #109

v3.0.3

• Fix a number of OSX 10.10 support issues.