[core] configure the root logger (#536)

Author: Kyle-Verhoog

ddtrace/__init__.py

@@ -1,3 +1,4 @@
+import logging
 from .monkey import patch, patch_all
 from .pin import Pin
 from .span import Span
@@ -6,6 +7,10 @@
 
 __version__ = '0.12.1'
 
+# configure the root logger
+logging.basicConfig()
+log = logging.getLogger(__name__)
+
 # a global tracer instance with integration settings
 tracer = Tracer()
 config = Config()