--- a
+++ b/__init__.py
@@ -0,0 +1,8 @@
+import sys
+if sys.version_info[0] < 3:
+    raise Exception("Error: You are not running Python 3.")
+
+from wsitools.file_management import case_list_manager, offset_csv_manager, wsi_case_manager, class_label_csv_manager
+from wsitools.tissue_detection import tissue_detector
+from wsitools.wsi_annotation import point_annotation, region_annotation
+from wsitools.wsi_registration import auto_wsi_matcher