Release Release 2.5.0 · pythonnet/pythonnet

⚠️ This release will be the last one supporting Python 2 and non-.NET-Standard builds.

This version improves performance on benchmarks significantly compared to 2.3 and includes various additions and improvements to the library.

Automatic NuGet package generation in appveyor and local builds
Function that sets Py_NoSiteFlag to 1.
Support for Jetson Nano.
Support for __len__ for .NET classes that implement ICollection
PyExport attribute to hide .NET types from Python
PythonException.Format method to format exceptions the same as
traceback.format_exception
Runtime.None to be able to pass None as parameter into Python from .NET
PyObject.IsNone() to check if a Python object is None in .NET.
Support for Python 3.8
Codecs as the designated way to handle automatic conversions between
.NET and Python types

Added argument types information to "No method matches given arguments" message
Moved wheel import in setup.py inside of a try/except to prevent pip collection failures
Removes PyLong_GetMax and PyClass_New when targetting Python3
Improved performance of calls from Python to C#
Added support for converting python iterators to C# arrays
Changed usage of the obsolete function
GetDelegateForFunctionPointer(IntPtr, Type) to
GetDelegateForFunctionPointer<TDelegate>(IntPtr)
When calling C# from Python, enable passing argument of any type to a
parameter of C# type object by wrapping it into PyObject instance.
([#881][i881])
Added support for kwarg parameters when calling .NET methods from Python
Changed method for finding MSBuild using vswhere
Reworked Finalizer. Now objects drop into its queue upon finalization,
which is periodically drained when new objects are created.
Marked Runtime.OperatingSystemName and Runtime.MachineName as
Obsolete, should never have been public in the first place. They also
don't necessarily return a result that matches the platform module's.
Unconditionally depend on pycparser for the interop module generation

Fixed runtime that fails loading when using pythonnet in an environment
together with Nuitka
Fixes bug where delegates get casts (dotnetcore)
Determine size of interpreter longs at runtime
Handling exceptions ocurred in ModuleObject's getattribute
Fill __classcell__ correctly for Python subclasses of .NET types
Fixed issue with params methods that are not passed an array.
Use UTF8 to encode strings passed to PyRun_String on Python 3

These authors have contributed to this release: