Fix for #7369: unroll change in scaling dtype

asifzubair · asifzubair · commit 405fd5964f59 · 2025-07-27T10:13:41.000-05:00
diff --git a/pymc/step_methods/metropolis.py b/pymc/step_methods/metropolis.py
@@ -1091,7 +1091,7 @@ class DEMetropolisZ(ArrayStepShared):
         "accept": (np.float64, []),
         "accepted": (bool, []),
         "tune": (bool, []),
-        "scaling": (np.float64, [None]),
+        "scaling": (np.float64, []),
         "lambda": (np.float64, []),
     }
 

Original file line number	Diff line number	Diff line change
`@@ -1091,7 +1091,7 @@ class DEMetropolisZ(ArrayStepShared):`
`1091`	`1091`	`"accept": (np.float64, []),`
`1092`	`1092`	`"accepted": (bool, []),`
`1093`	`1093`	`"tune": (bool, []),`
`1094`		`- "scaling": (np.float64, [None]),`
	`1094`	`+ "scaling": (np.float64, []),`
`1095`	`1095`	`"lambda": (np.float64, []),`
`1096`	`1096`	`}`
`1097`	`1097`