Mar 12, 2023 · Mar 11, 2023 · Mar 11, 2023 · Mar 11, 2023
diff --git a/AUTHORS.md b/AUTHORS.md
 -   ([@alxnull](https://github.com/alxnull))
 -   ([@gpetrou](https://github.com/gpetrou))
 -   Ehsan Iran-Nejad ([@eirannejad](https://github.com/eirannejad))
 -   ([@legomanww](https://github.com/legomanww))
diff --git a/CHANGELOG.md b/CHANGELOG.md
 -   Make a second call to `pythonnet.load` a no-op, as it was intended.

 - Added support for multiple inheritance when inheriting from a class and/or multiple interfaces.
 - Fixed error occuring when calling `GetBuffer` for anything other than `PyBUF.SIMPLE`

 ## [3.0.1](https://github.com/pythonnet/pythonnet/releases/tag/v3.0.1) - 2022-11-03

diff --git a/src/embed_tests/TestPyBuffer.cs b/src/embed_tests/TestPyBuffer.cs
            Assert.AreEqual(1, arr.Refcount);
        }

        [Test]
        public void MultidimensionalNumPyArray()
        {
            var ndarray = np.arange(24).reshape(1,2,3,4).T;
            PyObject ndim = ndarray.ndim;
            PyObject shape = ndarray.shape;
            PyObject strides = ndarray.strides;
            PyObject contiguous = ndarray.flags["C_CONTIGUOUS"];

            using PyBuffer buf = ndarray.GetBuffer(PyBUF.STRIDED);

            Assert.Multiple(() =>
            {
                Assert.That(buf.Dimensions, Is.EqualTo(ndim.As<int>()));
                Assert.That(buf.Shape, Is.EqualTo(shape.As<long[]>()));
                Assert.That(buf.Strides, Is.EqualTo(strides.As<long[]>()));
                Assert.That(buf.IsContiguous(BufferOrderStyle.C), Is.EqualTo(contiguous.As<bool>()));
            });
        }

        [MethodImpl(MethodImplOptions.NoInlining)]
        static void MakeBufAndLeak(PyObject bufProvider)
        {
            using var scope = Py.CreateScope();
            return Runtime.Runtime.PyByteArray_FromStringAndSize(str).MoveToPyObject();
        }

        dynamic np
        {
            get
            {
                try
                {
                    return Py.Import("numpy");
                }
                catch (PythonException)
                {
                    Assert.Inconclusive("Numpy or dependency not installed");
                    return null;
                }
            }
        }
    }
 }
diff --git a/src/runtime/PythonTypes/PyBuffer.cs b/src/runtime/PythonTypes/PyBuffer.cs
        private PyObject _exporter;
        private Py_buffer _view;

 unsafeinternal PyBuffer(PyObject exporter, PyBUF flags)
        internal PyBuffer(PyObject exporter, PyBUF flags)
        {
            _view = new Py_buffer();

            var intPtrBuf = new IntPtr[_view.ndim];
            if (_view.shape != IntPtr.Zero)
            {
                Marshal.Copy(_view.shape, intPtrBuf, 0,(int)_view.len * sizeof(IntPtr));
                Marshal.Copy(_view.shape, intPtrBuf, 0, _view.ndim);
                Shape = intPtrBuf.Select(x => (long)x).ToArray();
            }

            if (_view.strides != IntPtr.Zero) {
                Marshal.Copy(_view.strides, intPtrBuf, 0,(int)_view.len * sizeof(IntPtr));
                Marshal.Copy(_view.strides, intPtrBuf, 0, _view.ndim);
                Strides = intPtrBuf.Select(x => (long)x).ToArray();
            }

            if (_view.suboffsets != IntPtr.Zero) {
                Marshal.Copy(_view.suboffsets, intPtrBuf, 0,(int)_view.len * sizeof(IntPtr));
                Marshal.Copy(_view.suboffsets, intPtrBuf, 0, _view.ndim);
                SubOffsets = intPtrBuf.Select(x => (long)x).ToArray();
            }
        }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -85,3 +85,4 @@
		- ([@alxnull](https://github.com/alxnull))
		- ([@gpetrou](https://github.com/gpetrou))
		- Ehsan Iran-Nejad ([@eirannejad](https://github.com/eirannejad))
		- ([@legomanww](https://github.com/legomanww))
Original file line number	Diff line number	Diff line change
Expand Up		@@ -17,6 +17,7 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
		- Make a second call to `pythonnet.load` a no-op, as it was intended.

		- Added support for multiple inheritance when inheriting from a class and/or multiple interfaces.
		- Fixed error occuring when calling `GetBuffer` for anything other than `PyBUF.SIMPLE`

		## [3.0.1](https://github.com/pythonnet/pythonnet/releases/tag/v3.0.1) - 2022-11-03

Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -110,6 +110,26 @@ public void Finalization()
		Assert.AreEqual(1, arr.Refcount);
		}

		[Test]
		public void MultidimensionalNumPyArray()
		{
		var ndarray = np.arange(24).reshape(1,2,3,4).T;
		PyObject ndim = ndarray.ndim;
		PyObject shape = ndarray.shape;
		PyObject strides = ndarray.strides;
		PyObject contiguous = ndarray.flags["C_CONTIGUOUS"];

		using PyBuffer buf = ndarray.GetBuffer(PyBUF.STRIDED);

		Assert.Multiple(() =>
		{
		Assert.That(buf.Dimensions, Is.EqualTo(ndim.As<int>()));
		Assert.That(buf.Shape, Is.EqualTo(shape.As<long[]>()));
		Assert.That(buf.Strides, Is.EqualTo(strides.As<long[]>()));
		Assert.That(buf.IsContiguous(BufferOrderStyle.C), Is.EqualTo(contiguous.As<bool>()));
		});
		}

		[MethodImpl(MethodImplOptions.NoInlining)]
		static void MakeBufAndLeak(PyObject bufProvider)
		{
Expand All		@@ -121,5 +141,21 @@ static PyObject ByteArrayFromAsciiString(string str)
		using var scope = Py.CreateScope();
		return Runtime.Runtime.PyByteArray_FromStringAndSize(str).MoveToPyObject();
		}

		dynamic np
		{
		get
		{
		try
		{
		return Py.Import("numpy");
		}
		catch (PythonException)
		{
		Assert.Inconclusive("Numpy or dependency not installed");
		return null;
		}
		}
		}
		}
		}
Original file line number	Diff line number	Diff line change
Expand Up		@@ -11,7 +11,7 @@ public sealed class PyBuffer : IDisposable
		private PyObject _exporter;
		private Py_buffer _view;

		unsafeinternal PyBuffer(PyObject exporter, PyBUF flags)
		internal PyBuffer(PyObject exporter, PyBUF flags)
		{
		_view = new Py_buffer();

Expand All		@@ -25,17 +25,17 @@ unsafe internal PyBuffer(PyObject exporter, PyBUF flags)
		var intPtrBuf = new IntPtr[_view.ndim];
		if (_view.shape != IntPtr.Zero)
		{
		Marshal.Copy(_view.shape, intPtrBuf, 0,(int)_view.len * sizeof(IntPtr));
		Marshal.Copy(_view.shape, intPtrBuf, 0, _view.ndim);
		Shape = intPtrBuf.Select(x => (long)x).ToArray();
		}

		if (_view.strides != IntPtr.Zero) {
		Marshal.Copy(_view.strides, intPtrBuf, 0,(int)_view.len * sizeof(IntPtr));
		Marshal.Copy(_view.strides, intPtrBuf, 0, _view.ndim);
		Strides = intPtrBuf.Select(x => (long)x).ToArray();
		}

		if (_view.suboffsets != IntPtr.Zero) {
		Marshal.Copy(_view.suboffsets, intPtrBuf, 0,(int)_view.len * sizeof(IntPtr));
		Marshal.Copy(_view.suboffsets, intPtrBuf, 0, _view.ndim);
		SubOffsets = intPtrBuf.Select(x => (long)x).ToArray();
		}
		}
Expand Down