No module named '_dummy'

[laserinyoureye]

Running IPython 2.2.0 with Python 3.4.1 I get the following error when invoking:

C:\Python34\Scripts\ipython-script.py -i -c --confirm-exit --pylab

Error:
[TerminalIPythonApp] WARNING | Eventloop or matplotlib integration failed. Is matplotlib installed?
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
C:\Python34\lib\site-packages\IPython\core\shellapp.py in <lambda>(key)
    231         shell = self.shell
    232         if self.pylab:
--> 233             enable = lambda key: shell.enable_pylab(key, import_all=self.pylab_import_all)
    234             key = self.pylab
    235         elif self.matplotlib:

C:\Python34\lib\site-packages\IPython\core\interactiveshell.py in enable_pylab(self, gui, import_all, welcome_message)
   2980         from IPython.core.pylabtools import import_pylab
   2981
-> 2982         gui, backend = self.enable_matplotlib(gui)
   2983
   2984         # We want to prevent the loading of pylab to pollute the user's

C:\Python34\lib\site-packages\IPython\core\interactiveshell.py in enable_matplotlib(self, gui)
   2946         # Now we must activate the gui pylab wants to use, and fix %run to take
   2947         # plot updates into account
-> 2948         self.enable_gui(gui)
   2949         self.magics_manager.registry['ExecutionMagics'].default_runner = \
   2950             pt.mpl_runner(self.safe_execfile)

C:\Python34\lib\site-packages\IPython\terminal\interactiveshell.py in enable_gui(gui, app)
    314         from IPython.lib.inputhook import enable_gui as real_enable_gui
    315         try:
--> 316             return real_enable_gui(gui, app)
    317         except ValueError as e:
    318             raise UsageError("%s" % e)

C:\Python34\lib\site-packages\IPython\lib\inputhook.py in enable_gui(gui, app)
    539         e = "Invalid GUI request %r, valid ones are:%s" % (gui, guis.keys())
    540         raise ValueError(e)
--> 541     return gui_hook(app)
    542

C:\Python34\lib\site-packages\IPython\lib\inputhook.py in enable_qt4(self, app)
    259         """
    260         from IPython.lib.inputhookqt4 import create_inputhook_qt4
--> 261         from IPython.external.appnope import nope
    262         app, inputhook_qt4 = create_inputhook_qt4(self, app)
    263         self.set_inputhook(inputhook_qt4)

C:\Python34\lib\site-packages\IPython\external\appnope\__init__.py in <module>()
      9
     10     if sys.platform != "darwin" or V(platform.mac_ver()[0]) < V("10.9"):
---> 11         from _dummy import *
     12     else:
     13         from ._nope import *

ImportError: No module named '_dummy'

If I change line 11 in site-packages\IPython\external\appnope__initi__.py from:
from _dummy import *
to:
from ._dummy import *
it seems to work fine. Looks like the "." is missing.

[takluyver]

Thanks, I've made PR #6410 to fix it.