diff --git a/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/export/__init__.py b/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/export/__init__.py
index d1ff8be6be..89bb8f3eb7 100644
--- a/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/export/__init__.py
+++ b/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/export/__init__.py
@@ -247,27 +247,27 @@ def __init__(
                 if typ is Counter:
                     self._instrument_class_temporality[_Counter] = temporality
                 elif typ is UpDownCounter:
-                    self._instrument_class_temporality[
-                        _UpDownCounter
-                    ] = temporality
+                    self._instrument_class_temporality[_UpDownCounter] = (
+                        temporality
+                    )
                 elif typ is Histogram:
-                    self._instrument_class_temporality[
-                        _Histogram
-                    ] = temporality
+                    self._instrument_class_temporality[_Histogram] = (
+                        temporality
+                    )
                 elif typ is Gauge:
                     self._instrument_class_temporality[_Gauge] = temporality
                 elif typ is ObservableCounter:
-                    self._instrument_class_temporality[
-                        _ObservableCounter
-                    ] = temporality
+                    self._instrument_class_temporality[_ObservableCounter] = (
+                        temporality
+                    )
                 elif typ is ObservableUpDownCounter:
                     self._instrument_class_temporality[
                         _ObservableUpDownCounter
                     ] = temporality
                 elif typ is ObservableGauge:
-                    self._instrument_class_temporality[
-                        _ObservableGauge
-                    ] = temporality
+                    self._instrument_class_temporality[_ObservableGauge] = (
+                        temporality
+                    )
                 else:
                     raise Exception(f"Invalid instrument class found {typ}")
 
@@ -287,27 +287,27 @@ def __init__(
                 if typ is Counter:
                     self._instrument_class_aggregation[_Counter] = aggregation
                 elif typ is UpDownCounter:
-                    self._instrument_class_aggregation[
-                        _UpDownCounter
-                    ] = aggregation
+                    self._instrument_class_aggregation[_UpDownCounter] = (
+                        aggregation
+                    )
                 elif typ is Histogram:
-                    self._instrument_class_aggregation[
-                        _Histogram
-                    ] = aggregation
+                    self._instrument_class_aggregation[_Histogram] = (
+                        aggregation
+                    )
                 elif typ is Gauge:
                     self._instrument_class_aggregation[_Gauge] = aggregation
                 elif typ is ObservableCounter:
-                    self._instrument_class_aggregation[
-                        _ObservableCounter
-                    ] = aggregation
+                    self._instrument_class_aggregation[_ObservableCounter] = (
+                        aggregation
+                    )
                 elif typ is ObservableUpDownCounter:
                     self._instrument_class_aggregation[
                         _ObservableUpDownCounter
                     ] = aggregation
                 elif typ is ObservableGauge:
-                    self._instrument_class_aggregation[
-                        _ObservableGauge
-                    ] = aggregation
+                    self._instrument_class_aggregation[_ObservableGauge] = (
+                        aggregation
+                    )
                 else:
                     raise Exception(f"Invalid instrument class found {typ}")