Problem with mayavi.mlab

Actually I should call it a problem with vtk or something else.
I use anaconda to install it, successfully.
`import vtk` OK
`import mayavi` No problem
`from mayavi import mlab`

> Traceback (most recent call last):
> File "", line 1, in
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\mayavi\mlab.py", line 15, in
> from mayavi.tools.camera import view, roll, yaw, pitch, move
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\mayavi\tools\camera.py", line 24, in
> from .engine_manager import get_engine
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\mayavi\tools\engine_manager.py", line 14, in
> from mayavi.core.engine import Engine
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\mayavi\core\engine.py", line 34, in
> from mayavi.core.ui.mayavi_scene import viewer_factory
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\mayavi\core\ui\mayavi_scene.py", line 12, in
> from tvtk.tools.ivtk import IVTK
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\tvtk\tools\ivtk.py", line 35, in
> from tvtk.pyface.api import Scene, DecoratedScene
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\tvtk\pyface\api.py", line 1, in
> from .decorated_scene import DecoratedScene
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\tvtk\pyface\decorated_scene.py", line 12, in
> from tvtk.pyface.toolkit import toolkit_object
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\tvtk\pyface\toolkit.py", line 3, in
toolkit = toolkit_object = find_toolkit('tvtk.toolkits')
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\pyface\base_toolkit.py", line 263, in find_toolkit
return import_toolkit(ETSConfig.toolkit, entry_point)
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\pyface\base_toolkit.py", line 217, in import_toolkit
toolkit_object = plugin.load()
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\pkg_resources\__init__.py", line 2404, in load
self.require(*args, **kwargs)
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\pkg_resources\__init__.py", line 2427, in require
items = working_set.resolve(reqs, env, installer, extras=self.extras)
> File "E:\Users\Ecauc\Anaconda3\lib\site-packages\pkg_resources\__init__.py", line 867, in resolve
raise DistributionNotFound(req, requirers)
>pkg_resources.DistributionNotFound: The 'vtk' distribution was not found and is required by the application

I use
>Python 3.6.3 |Anaconda custom (64-bit)| (default, Oct 15 2017, 03:27:45) [MSC v.1900 64 bit (AMD64)] on win32