nit fixes

docs/opentelemetry-tracing.rst

@@ -21,12 +21,12 @@ We also need to tell OpenTelemetry which exporter to use. For example, to export
     # in a seperate thread to not block on the main thread
     from opentelemetry.sdk.trace.export import BatchExportSpanProcessor
 
-    # create and export one trace every 1000 requests
+    # Create and export one trace every 1000 requests
     sampler = ProbabilitySampler(1/1000)
-    # Uses the default tracer provider
+    # Use the default tracer provider
     trace.set_tracer_provider(TracerProvider(sampler=sampler))
     trace.get_tracer_provider().add_span_processor(
-        # initialize the cloud tracing exporter
+        # Initialize the cloud tracing exporter
         BatchExportSpanProcessor(CloudTraceSpanExporter())
     )
 

google/cloud/spanner_v1/_opentelemetry_tracing.py

@@ -32,13 +32,13 @@
 @contextmanager
 def trace_call(name, session, extra_attributes=None):
     if not HAS_OPENTELEMETRY_INSTALLED or not session:
-        # empty context manager. users will have to check if the generated value is None or a span
+        # Empty context manager. Users will have to check if the generated value is None or a span
         yield None
         return
 
     tracer = trace.get_tracer(__name__)
 
-    # base attributes that we know for every trace created
+    # Set base attributes that we know for every trace created
     attributes = {
         "db.type": "spanner",
         "db.url": spanner_client.SpannerClient.SERVICE_ADDRESS,

tests/system/test_system.py

@@ -2513,7 +2513,7 @@ def test_execute_sql_returning_transfinite_floats(self):
                 )
             )
             self.assertEqual(len(rows), 1)
-            (float_array,) = rows[0]
+            float_array = rows[0]
             self.assertEqual(float_array[0], float("-inf"))
             self.assertEqual(float_array[1], float("+inf"))
             # NaNs cannot be searched for by equality.