diff --git a/IPython/html/widgets/__init__.py b/IPython/html/widgets/__init__.py
index 8ffbf22..19654b7 100644
--- a/IPython/html/widgets/__init__.py
+++ b/IPython/html/widgets/__init__.py
@@ -9,4 +9,4 @@ from .widget_int import IntTextWidget, BoundedIntTextWidget, IntSliderWidget, In
from .widget_selection import RadioButtonsWidget, ToggleButtonsWidget, DropdownWidget, SelectWidget
from .widget_selectioncontainer import TabWidget, AccordionWidget
from .widget_string import HTMLWidget, LatexWidget, TextWidget, TextareaWidget
-from .interaction import interact, interactive, annotate, const
+from .interaction import interact, interactive, const
diff --git a/IPython/html/widgets/interaction.py b/IPython/html/widgets/interaction.py
index 65a07a6..b11fff0 100644
--- a/IPython/html/widgets/interaction.py
+++ b/IPython/html/widgets/interaction.py
@@ -246,17 +246,3 @@ class const(HasTraits):
description = Unicode('', help="Any Python object")
def __init__(self, value, **kwargs):
super(const, self).__init__(value=value, **kwargs)
-
-def annotate(**kwargs):
- """Python 3 compatible function annotation for Python 2."""
- if not kwargs:
- raise ValueError('annotations must be provided as keyword arguments')
- def dec(f):
- if hasattr(f, '__annotations__'):
- for k, v in kwargs.items():
- f.__annotations__[k] = v
- else:
- f.__annotations__ = kwargs
- return f
- return dec
-
diff --git a/IPython/utils/py3compat.py b/IPython/utils/py3compat.py
index 09d0a82..161c54e 100644
--- a/IPython/utils/py3compat.py
+++ b/IPython/utils/py3compat.py
@@ -223,6 +223,21 @@ else:
filename = fname
builtin_mod.execfile(filename, *where)
+
+def annotate(**kwargs):
+ """Python 3 compatible function annotation for Python 2."""
+ if not kwargs:
+ raise ValueError('annotations must be provided as keyword arguments')
+ def dec(f):
+ if hasattr(f, '__annotations__'):
+ for k, v in kwargs.items():
+ f.__annotations__[k] = v
+ else:
+ f.__annotations__ = kwargs
+ return f
+ return dec
+
+
# Parts below taken from six:
# Copyright (c) 2010-2013 Benjamin Peterson
#