bpo-41205: Document Decimal power 0 to the 0 (GH-21386)

srinivasreddy · mdickinson · web-flow · commit 10e466448f67 · 2020-07-19T13:03:43.000+02:00
Co-authored-by: Mark Dickinson &lt;dickinsm@gmail.com&gt;
diff --git a/Doc/library/decimal.rst b/Doc/library/decimal.rst
@@ -1357,6 +1357,9 @@ In addition to the three supplied contexts, new contexts can be created with the
       The rounding mode of the context is used. Results are always correctly-rounded
       in the Python version.
 
+      ``Decimal(0) ** Decimal(0)`` results in ``InvalidOperation``, and if ``InvalidOperation``
+      is not trapped, then results in ``Decimal('NaN')``.
+
       .. versionchanged:: 3.3
          The C module computes :meth:`power` in terms of the correctly-rounded
          :meth:`exp` and :meth:`ln` functions. The result is well-defined but
