[vtkusers] Cannot import python bindings anymore: module 'dl' has no attribute 'RTLD_NOW'

[Nicolas Cedilnik]

Hello,

Following a reboot after some system updates, I cannot "import vtk" anymore:

$ python

Python 3.6.2 |Continuum Analytics, Inc.| (default, Jul 20 2017, 13:51:32)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import vtk
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "/opt/ncedilni/miniconda3.6/envs/vtscan/lib/python3.6/site-packages/vtk/__init__.py", line 38, in <module>
     sys.setdlopenflags(dl.RTLD_NOW|dl.RTLD_GLOBAL)
AttributeError: module 'dl' has no attribute 'RTLD_NOW'

Google wasn't very helpful, so I'm posting here… I'm running Fedora 26, 
python 3.6 binaries with miniconda and vtk 7.1.1 installed from the 
conda-forge repository.

How did I break my VTK install?

Should I file a bug report somewhere?

Thanks for your help,

-- Nicolas