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Fix numpy deprecation warning when running tests in test_metropolis.py #7871

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Merged
merged 2 commits into from
Jul 28, 2025
Merged

Fix numpy deprecation warning when running tests in test_metropolis.py #7871

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9aa232f
Fix for #7369: return scalar for sampler stats
asifzubair Jul 24, 2025
405fd59
Fix for #7369: unroll change in scaling dtype
asifzubair Jul 27, 2025
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4 changes: 2 additions & 2 deletions pymc/step_methods/metropolis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1091,7 +1091,7 @@ class DEMetropolisZ(ArrayStepShared):
"accept": (np.float64, []),
"accepted": (bool, []),
"tune": (bool, []),
"scaling": (np.float64, []),
"scaling": (np.float64, [None]),
"lambda": (np.float64, []),
}

Expand Down Expand Up @@ -1214,7 +1214,7 @@ def astep(self, q0: RaveledVars) -> tuple[RaveledVars, StatsType]:

stats = {
"tune": self.tune,
"scaling": self.scaling,
"scaling": np.mean(self.scaling),
"lambda": self.lamb,
"accept": np.exp(accept),
"accepted": accepted,
Expand Down