Move OutputObserver from accuracy to observers

kernel_tuner/accuracy.py

@@ -4,7 +4,7 @@
 import logging
 import re
 
-from kernel_tuner.observers import AccuracyObserver
+from .observers import OutputObserver
 
 
 class Tunable(UserDict):
@@ -141,17 +141,6 @@ def __init__(
         super().__init__(param_key, arrays)
 
 
-class OutputObserver(BenchmarkObserver):
-    """Observer that can verify or measure something about the output produced by a kernel."""
-
-    @abstractmethod
-    def process_kernel_output(self, answer, output):
-        """method will be called once before benchmarking of a single kernel configuration. The arguments
-        provided are the `answer` as passed `tune_kernel` and the `output` produced by the kernel
-        """
-        pass
-
-
 def error_metric_from_name(user_key, EPS=1e-8):
     """Find the error metric function for the given name.
 

kernel_tuner/observers/__init__.py

@@ -1 +1 @@
-from .observer import BenchmarkObserver, IterationObserver, ContinuousObserver
+from .observer import BenchmarkObserver, IterationObserver, ContinuousObserver, OutputObserver

kernel_tuner/observers/observer.py

@@ -12,7 +12,7 @@ def register_configuration(self, params):
         """Called once before benchmarking of a single kernel configuration. The `params` argument is a `dict`
         that stores the configuration parameters."""
         pass
-    
+
     def before_start(self):
         """before start is called every iteration before the kernel starts"""
         pass
@@ -45,3 +45,16 @@ class IterationObserver(BenchmarkObserver):
 
 class ContinuousObserver(BenchmarkObserver):
     pass
+
+
+class OutputObserver(BenchmarkObserver):
+    """Observer that can verify or measure something about the output produced by a kernel."""
+
+    @abstractmethod
+    def process_kernel_output(self, answer, output):
+        """method will be called once before benchmarking of a single kernel configuration. The arguments
+        provided are the `answer` as passed `tune_kernel` and the `output` produced by the kernel
+        """
+        pass
+
+