DOC: Improve np.histogram docs (#25404)

TheHawz · web-flow · commit 8385ba3c4827 · 2023-12-18T10:59:42.000-08:00
Add note to the weight parameter description describing the
relationship between the weight dtype and the returned dtype
diff --git a/numpy/lib/_histograms_impl.py b/numpy/lib/_histograms_impl.py
@@ -711,6 +711,8 @@ def histogram(a, bins=10, range=None, density=None, weights=None):
         (instead of 1). If `density` is True, the weights are
         normalized, so that the integral of the density over the range
         remains 1.
+        Please note that the ``dtype`` of `weights` will dictate the
+        ``dtype`` of the returned accumulator (`hist`).
     density : bool, optional
         If ``False``, the result will contain the number of samples in
         each bin. If ``True``, the result is the value of the
