pylint #37300 False positive F0401 on gtk.gdk import [open]

That's all:

$ cat test.py
"""hello"""
import gtk.gdk
print gtk.gdk

$ python test.py
<module 'gtk.gdk' (built-in)>

$ pylint test.py -rn -iy
No config file found, using default configuration
************* Module test
F0401: 2: Unable to import 'gtk.gdk'

prioritynormal
typebug
done in<not specified>
load0.500
load left0.500
closed by<not specified>