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-rw-r--r--numpy/lib/mixins.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/numpy/lib/mixins.py b/numpy/lib/mixins.py
index fbdc2edfb..3220f6534 100644
--- a/numpy/lib/mixins.py
+++ b/numpy/lib/mixins.py
@@ -137,6 +137,8 @@ class NDArrayOperatorsMixin(object):
Note that unlike ``numpy.ndarray``, ``ArrayLike`` does not allow operations
with arbitrary, unrecognized types. This ensures that interactions with
ArrayLike preserve a well-defined casting hierarchy.
+
+ .. versionadded:: 1.13
"""
# Like np.ndarray, this mixin class implements "Option 1" from the ufunc
# overrides NEP.