MAINT: update __init__.py

stsievert · JeanKossaifi · commit d93d280b574b · 2018-06-16T21:25:28.000+01:00
diff --git a/tensorly/backend/__init__.py b/tensorly/backend/__init__.py
@@ -15,6 +15,7 @@
     from .cupy_backend import *
 else:
     import warnings
-    warnings.warn('_BACKEND should be either "mxnet", "pytorch" or "numpy", {} given.'.format(_BACKEND))
+    warnings.warn('_BACKEND should be either "mxnet", "pytorch", '
+                  '"tensorflow", "cupy" or "numpy". '
+                  '{} was given.'.format(_BACKEND))
     warnings.warn('Using MXNet backend.')
-
