From 4493751a5f8c74b63e64088594e2d59af2f84639 Mon Sep 17 00:00:00 2001
From: Yannick Jadoul <yannick.jadoul@belgacom.net>
Date: Sun, 23 Aug 2020 18:35:51 +0200
Subject: [PATCH] Fix new-style __init__ usage in numpy docs (#2426)

---
 docs/advanced/pycpp/numpy.rst | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/docs/advanced/pycpp/numpy.rst b/docs/advanced/pycpp/numpy.rst
index 39cfa7365..8e5c6092c 100644
--- a/docs/advanced/pycpp/numpy.rst
+++ b/docs/advanced/pycpp/numpy.rst
@@ -81,7 +81,7 @@ buffer objects (e.g. a NumPy matrix).
     constexpr bool rowMajor = Matrix::Flags & Eigen::RowMajorBit;
 
     py::class_<Matrix>(m, "Matrix", py::buffer_protocol())
-        .def("__init__", [](py::buffer b) {
+        .def(py::init([](py::buffer b) {
             typedef Eigen::Stride<Eigen::Dynamic, Eigen::Dynamic> Strides;
 
             /* Request a buffer descriptor from Python */
@@ -101,8 +101,8 @@ buffer objects (e.g. a NumPy matrix).
             auto map = Eigen::Map<Matrix, 0, Strides>(
                 static_cast<Scalar *>(info.ptr), info.shape[0], info.shape[1], strides);
 
-            return Matrix(m);
-        });
+            return Matrix(map);
+        }));
 
 For reference, the ``def_buffer()`` call for this Eigen data type should look
 as follows: