Merge pull request #549 from Labelbox/jt/al-2193

[AL-2193] Deprecation message for Python 3.6

Author: hydak

labelbox/__init__.py

@@ -1,6 +1,13 @@
 name = "labelbox"
 __version__ = "3.19.1"
 
+import sys
+import warnings
+
+if sys.version_info < (3, 7):
+    warnings.warn("""Python 3.6 will no longer be actively supported 
+    starting 06/01/2022. Please upgrade to Python 3.7 or higher.""")
+
 from labelbox.client import Client
 from labelbox.schema.project import Project
 from labelbox.schema.model import Model