[vtkusers] Install Mayavi for Python 3.7.1 in Windows 10

[Adriaan]

Dear Kitware.

I'm trying to install VTK for Python 3.7.1 on Windows 10 but running 
<<pip install vtk>> gives me

<<
Collecting vtk
   Could not find a version that satisfies the requirement vtk (from 
versions: )
No matching distribution found for vtk
 >>

I installed VTK manually with 
<<https://www.vtk.org/files/release/7.1/vtkpython-7.1.1-Windows-64bit.exe>> 
but it does not solve the problem.

Running python --version returns Python 3.7.1 and running pip --version 
or pip3 --version returns pip 18.1 from 
c:\users\adria\appdata\local\programs\python\python37-32\lib\site-packages\pip 
(python 3.7).

How do I solve this problem?

Thanks,

Adriaan