Fixed silly errors

Author: bmermet

ddtrace/tracer.py

@@ -93,7 +93,7 @@ def configure(self, enabled=None, hostname=None, port=None, sampler=None,
 
         processing_pipeline = None
         if settings is not None:
-                processing_pipeline = settings.get([PP_KEY])
+                processing_pipeline = settings.get(PP_KEY)
 
         if hostname is not None or port is not None or processing_pipeline is not None:
             self.writer = AgentWriter(

tests/test_integration.py

@@ -11,7 +11,7 @@
 from ddtrace.api import API
 from ddtrace.ext import http
 from ddtrace.processors import FilterRequestsOnUrl
-from ddtrace.settings import PP_KEY
+from ddtrace.constants import PROCESSING_PIPELINE_KEY as PP_KEY
 from ddtrace.span import Span
 from ddtrace.tracer import Tracer
 from ddtrace.encoding import JSONEncoder, MsgpackEncoder, get_encoder