formatting

Author: Rishab87

pymc/step_methods/cannot_sample.py

@@ -1,21 +1,34 @@
+#   Copyright 2025 - present The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
 from pymc.step_methods.arraystep import ArrayStep
 
+
 class CannotSampleRV(ArrayStep):
     """
     A step method that raises an error when sampling a latent Multinomial variable.
     """
+
     name = "cannot_sample_rv"
+
     def __init__(self, vars, **kwargs):
         # Remove keys that ArrayStep.__init__ does not accept.
         kwargs.pop("model", None)
         kwargs.pop("initial_point", None)
         kwargs.pop("compile_kwargs", None)
         self.vars = vars
-        super().__init__(vars=vars,fs=[], **kwargs)
+        super().__init__(vars=vars, fs=[], **kwargs)
 
     def astep(self, q0):
         # This method is required by the abstract base class.
-        raise ValueError(
-            "Latent Multinomial variables are not supported"
-        )
-
+        raise ValueError("Latent Multinomial variables are not supported")