Cannot import name protocols

[nguillermin]

OS X 10.10.5, homebrew-installed Python 2.7.10

$ python2.7 test/runtests.py 
Traceback (most recent call last):
  File "test/runtests.py", line 8, in <module>
    from test_video import *
  File "/Users/megablanc/Developer/mirovideoconverter3/test/test_video.py", line 8, in <module>
    from mvc import video
  File "test/../mvc/__init__.py", line 5, in <module>
    from mvc import conversion
  File "test/../mvc/conversion.py", line 12, in <module>
    from mvc.video import get_thumbnail_synchronous
  File "test/../mvc/video.py", line 8, in <module>
    from mvc.widgets import idle_add
  File "test/../mvc/widgets/__init__.py", line 7, in <module>
    from .osx import widgetset
  File "test/../mvc/widgets/osx/widgetset.py", line 45, in <module>
    from .layout import VBox, HBox, Alignment, Table, Scroller, Expander, TabContainer, DetachedWindowHolder
  File "test/../mvc/widgets/osx/layout.py", line 49, in <module>
    import tableview
  File "test/../mvc/widgets/osx/tableview.py", line 50, in <module>
    import tablemodel
  File "test/../mvc/widgets/osx/tablemodel.py", line 34, in <module>
    from AppKit import (NSDragOperationNone, NSDragOperationAll, NSTableViewDropOn,
ImportError: cannot import name protocols

The full line at tablemodel.py:34 is

from AppKit import (NSDragOperationNone, NSDragOperationAll, NSTableViewDropOn,
                     NSOutlineViewDropOnItemIndex, protocols)

I've tried importing NSDragOperationNone, NSDragOperationAll, NSTableViewDropOn, NSOutlineViewDropOnItemIndex individually from python interpreter with no issue. from AppKit import protocols fails.

[Rudloff]

Same problem on OSX 10.11.

[ronaldoussoren]

The import of "protocols" is not necessary with recent versions of PyObjC. When using explicit protocols use objc.protocolNamed("name"), and it is never necessary to use an informal protocol object (which is why framework wrappers no longer explose those)