resolve flake8 and black issues

Author: brettlangdon

ddtrace/__init__.py

@@ -2,11 +2,11 @@
 
 import pkg_resources
 
-from .monkey import patch, patch_all
-from .pin import Pin
-from .span import Span
-from .tracer import Tracer
-from .settings import config
+from .monkey import patch, patch_all  # noqa: E402
+from .pin import Pin  # noqa: E402
+from .span import Span  # noqa: E402
+from .tracer import Tracer  # noqa: E402
+from .settings import config  # noqa: E402
 
 
 try:

ddtrace/opentracer/tracer.py

@@ -68,7 +68,7 @@ def __init__(self, service_name=None, config=None, scope_manager=None, dd_tracer
             invalid_keys = config_invalid_keys(self._config)
             if invalid_keys:
                 str_invalid_keys = ','.join(invalid_keys)
-                raise ConfigException('invalid key(s) given (%s)'.format(str_invalid_keys))
+                raise ConfigException('invalid key(s) given ({})'.format(str_invalid_keys))
 
         if not self._service_name:
             raise ConfigException(""" Cannot detect the \'service_name\'.

ddtrace/span.py

@@ -373,7 +373,7 @@ def pprint(self):
         ]
 
         lines.extend((' ', '%s:%s' % kv) for kv in sorted(self.meta.items()))
-        return '\n'.join('%10s %s' % l for l in lines)
+        return '\n'.join('%10s %s' % line for line in lines)
 
     @property
     def context(self):

tests/contrib/asyncio/test_tracer.py

@@ -370,6 +370,7 @@ def test_trace_multiple_coroutines_ot_inner(self):
         # if multiple coroutines have nested tracing, they must belong
         # to the same trace
         ot_tracer = init_tracer('asyncio_svc', self.tracer)
+
         @asyncio.coroutine
         def coro():
             # another traced coroutine

tests/internal/runtime/utils.py

@@ -50,17 +50,17 @@ def cgroup_line_valid_test_cases():
 
     valid_test_cases = dict(
         (
-            ':'.join([id, ','.join(groups), path.format(container_id, pod_id)]),
+            ':'.join([id_, ','.join(groups), path.format(container_id, pod_id)]),
             CGroupInfo(
-                id=id,
+                id=id_,
                 groups=','.join(groups),
                 path=path.format(container_id, pod_id),
                 controllers=groups,
                 container_id=container_id if '{0}' in path else None,
                 pod_id=pod_id if '{1}' in path else None,
             )
         )
-        for path, id, groups, container_id, pod_id
+        for path, id_, groups, container_id, pod_id
         in itertools.product(paths, ids, controllers, container_ids, pod_ids)
     )
     # Dedupe test cases