can't import generators

[tommyhlw]

First I got this response:

Python 3.5.2 (default, Nov 17 2016, 17:05:23)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.

from sknano.generators import SWNTBundleGenerator

/usr/local/lib/python3.5/dist-packages/sknano/core/refdata/element_data.yaml
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python3.5/dist-packages/sknano/generators/init.py", line 59, in
from ._base import *
File "/usr/local/lib/python3.5/dist-packages/sknano/generators/_base.py", line 19, in
from sknano.core.atoms import StructureAtom as Atom, StructureAtoms as Atoms
File "/usr/local/lib/python3.5/dist-packages/sknano/core/atoms/init.py", line 113, in
from ._atoms import *
File "/usr/local/lib/python3.5/dist-packages/sknano/core/atoms/_atoms.py", line 21, in
from sknano.core.refdata import atomic_masses, atomic_mass_symbol_map,
File "/usr/local/lib/python3.5/dist-packages/sknano/core/refdata/init.py", line 45, in
from ._element_data import *
File "/usr/local/lib/python3.5/dist-packages/sknano/core/refdata/_element_data.py", line 21, in
'element_data.yaml'))
File "/usr/local/lib/python3.5/dist-packages/sknano/core/_io.py", line 299, in loadobj
kwargs["Loader"] = Loader
NameError: name 'Loader' is not defined

I checked out the "_io.py" and realised I need something like "yaml" to define "Loader". This was not obvious from the output...
Then I googled and installed the following:
$ sudo pip3 install pyyaml

Now it forwards to less files but still doesn't work:

Python 3.5.2 (default, Nov 17 2016, 17:05:23)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.

from sknano.generators import SWNTBundleGenerator

Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python3.5/dist-packages/sknano/generators/init.py", line 59, in
from ._base import *
File "/usr/local/lib/python3.5/dist-packages/sknano/generators/_base.py", line 19, in
from sknano.core.atoms import StructureAtom as Atom, StructureAtoms as Atoms
File "/usr/local/lib/python3.5/dist-packages/sknano/core/init.py", line 128, in
from ._io import *
File "/usr/local/lib/python3.5/dist-packages/sknano/core/_io.py", line 298
return yaml.load(fp, *args, **kwargs)
^
IndentationError: unindent does not match any outer indentation level

What to do?

[wzhe09]

I have met the same problem.
Just try (sudo or not)
(1) pip uninstall scikit-nano
(2) pip install pyyaml
(3) pip install scikit-nano