clean up the __init__ file

python/gtsam/__init__.py

@@ -1,6 +1,12 @@
-from . import utils
-from .gtsam import *
-from .utils import findExampleDataFile
+"""Module definition file for GTSAM"""
+
+# pylint: disable=import-outside-toplevel, global-variable-not-assigned, possibly-unused-variable, import-error, import-self
+
+import sys
+
+from gtsam import gtsam, utils
+from gtsam.gtsam import *
+from gtsam.utils import findExampleDataFile
 
 
 def _init():