diff options
Diffstat (limited to 'doc/source')
| -rw-r--r-- | doc/source/reference/arrays.classes.rst | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/source/reference/arrays.classes.rst b/doc/source/reference/arrays.classes.rst index 2f40423ee..fd8b3bfb8 100644 --- a/doc/source/reference/arrays.classes.rst +++ b/doc/source/reference/arrays.classes.rst @@ -71,10 +71,11 @@ NumPy provides several hooks that classes can customize: The method should return either the result of the operation, or :obj:`NotImplemented` if the operation requested is not implemented. - If one of the input or output arguments has a :func:`__array_ufunc__` + If one of the input, output, or ``where`` arguments has a :func:`__array_ufunc__` method, it is executed *instead* of the ufunc. If more than one of the arguments implements :func:`__array_ufunc__`, they are tried in the - order: subclasses before superclasses, inputs before outputs, otherwise + order: subclasses before superclasses, inputs before outputs, + outputs before ``where``, otherwise left to right. The first routine returning something other than :obj:`NotImplemented` determines the result. If all of the :func:`__array_ufunc__` operations return :obj:`NotImplemented`, a |