Brain import error

[christian-oreilly]

Code:

from visbrain import Brain

Result:

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-7-05c534653bd0> in <module>()
----> 1 from visbrain import Brain

~/python_venv/venv-3.4/lib/python3.5/site-packages/visbrain/__init__.py in <module>()
     21 
     22 # Import modules :
---> 23 from .brain import Brain
     24 from .colorbar import Colorbar
     25 from .figure import Figure

~/python_venv/venv-3.4/lib/python3.5/site-packages/visbrain/brain/__init__.py in <module>()
      1 """From the brain file, import the brain module."""
----> 2 from .brain import Brain

~/python_venv/venv-3.4/lib/python3.5/site-packages/visbrain/brain/brain.py in <module>()
      9 import logging
     10 
---> 11 import vispy.scene.cameras as viscam
     12 
     13 from .interface import UiInit, UiElements, BrainShortcuts

~/python_venv/venv-3.4/lib/python3.5/site-packages/vispy/scene/__init__.py in <module>()
     31 """
     32 
---> 33 from .visuals import *  # noqa
     34 from .cameras import *  # noqa
     35 from ..visuals.transforms import *  # noqa

~/python_venv/venv-3.4/lib/python3.5/site-packages/vispy/scene/visuals.py in <module>()
     16 import weakref
     17 
---> 18 from .. import visuals
     19 from .node import Node
     20 from ..visuals.filters import ColorFilter, PickingFilter

~/python_venv/venv-3.4/lib/python3.5/site-packages/vispy/visuals/__init__.py in <module>()
     21 from .histogram import HistogramVisual  # noqa
     22 from .infinite_line import InfiniteLineVisual  # noqa
---> 23 from .isocurve import IsocurveVisual  # noqa
     24 from .isoline import IsolineVisual  # noqa
     25 from .isosurface import IsosurfaceVisual  # noqa

~/python_venv/venv-3.4/lib/python3.5/site-packages/vispy/visuals/isocurve.py in <module>()
     16 _HAS_MPL = has_matplotlib()
     17 if _HAS_MPL:
---> 18     from matplotlib import _cntr as cntr
     19 
     20 

ImportError: cannot import name '_cntr'

Virtual environement:

!pip3 freeze

alabaster==0.7.10
apptools==4.4.0
astroid==1.6.2
Babel==2.5.3
beautifulsoup4==4.6.0
bibtexparser==0.6.2
biopython==1.70
bleach==2.1.3
bluepy==0.11.11
bluepy-configfile==0.1.4
-e git+ssh://oreilly@bbpcode.epfl.ch/project/proj55/thalamus_pipeline@038eae051f9d5c96313f34a3df0df53cec430626#egg=BlueThalamus&subdirectory=BlueThalamus
-e git+ssh://oreilly@bbpcode.epfl.ch/nse/brainbuilder@de6587f4230eed2829dbbc0f90998a2cd8019561#egg=brainbuilder
certifi==2017.11.5
chardet==3.0.4
click==6.7
cloudpickle==0.5.2
colorlover==0.2.1
configobj==5.0.6
cssselect==1.0.3
cycler==0.10.0
Cython==0.27.3
decorator==4.2.1
docutils==0.14
entrypoints==0.2.3
enum34==1.1.6
envisage==4.6.0
eutils==0.3.2
feedparser==5.2.1
future==0.16.0
gitdb2==2.0.3
GitPython==2.1.8
h5py==2.7.1
html5lib==1.0.1
idna==2.6
imagesize==1.0.0
ipykernel==4.8.2
ipython==6.2.1
ipython-genutils==0.2.0
ipywidgets==7.1.2
isort==4.3.4
jedi==0.11.1
Jinja2==2.10
jsonschema==2.6.0
jupyter==1.0.0
jupyter-client==5.2.2
jupyter-console==5.2.0
jupyter-core==4.4.0
kiwisolver==1.0.1
lazy==1.3
lazy-object-proxy==1.3.1
lxml==4.1.1
MarkupSafe==1.0
matplotlib==2.2.0
mayavi==4.5.0
mccabe==0.6.1
metapub==0.4.3.6
mistune==0.8.3
mne==0.16.dev0
-e git+https://github.com/BlueBrain/nat.git@63fa7e2a0828852e0c41423ea0d18c643a712295#egg=nat
nbconvert==5.3.1
nbformat==4.4.0
-e git+https://github.com/BlueBrain/NeuroM.git@10b10751e288328495e14c6185dd08d04224f1d3#egg=neurom
nibabel==2.2.1
nine==1.0.0
notebook==5.4.0
numexpr==2.6.4
numpy==1.14.2
numpy-stl==2.3.2
numpydoc==0.7.0
packaging==17.1
pandas==0.22.0
pandocfilters==1.4.2
parse==1.8.2
parso==0.1.1
pathlib==1.0.1
patsy==0.5.0
pexpect==4.4.0
pickleshare==0.7.4
Pillow==5.0.0
pkg-resources==0.0.0
plotly==2.4.1
pluggy==0.6.0
progressbar2==3.34.3
prompt-toolkit==1.0.15
psutil==5.4.3
ptyprocess==0.5.2
py==1.5.2
pycodestyle==2.3.1
pyface==5.1.0
pyflakes==1.6.0
Pygments==2.2.0
pylint==1.8.3
pylru==1.0.9
pynrrd==0.2.4
PyOpenGL==3.1.0
pyparsing==2.2.0
PyQt5==5.9.2
pysurfer==0.8.0
python-dateutil==2.7.0
python-ternary==1.0.3
python-utils==2.2.0
pytz==2018.3
PyYAML==3.12
pyzmq==17.0.0
Pyzotero==1.3.0
QtAwesome==0.4.4
qtconsole==4.3.1
QtPy==1.4.0
quantities==0.12.1
requests==2.18.4
rope==0.10.7
scikit-learn==0.19.1
scikits.bootstrap==0.3.3
scipy==1.0.0
seaborn==0.8.1
Send2Trash==1.5.0
Shapely==1.3.2
simplegeneric==0.8.1
sip==4.19.8
six==1.11.0
sklearn==0.0
smmap2==2.0.3
snowballstemmer==1.2.1
Sphinx==1.7.1
sphinxcontrib-websupport==1.0.1
spyder==3.2.8
spyndle==0.4.0
SQLAlchemy==1.2.1
statsmodels==0.8.0
tables==3.4.2
tabulate==0.8.2
terminado==0.8.1
testpath==0.3.1
tornado==5.0
tox==2.9.1
tqdm==4.19.6
traitlets==4.3.2
traits==4.6.0
traitsui==5.1.0
Unidecode==1.0.22
urllib3==1.22
virtualenv==15.1.0
visbrain==0.3.9
vispy==0.5.2
voxcell==2.3.4.dev1
voxcellview==2.1.1
vtk==8.1.0
Wand==0.4.4
wcwidth==0.1.7
webencodings==0.5.1
widgetsnbextension==3.1.4
wonambi==3.1
wrapt==1.10.11

[raphaelvallat]

Hi @christian-oreilly! Thanks for the feedback. Unfortunately, VisPy is not yet compatible with the latest version of matplotlib (2.2). Downgrading matplotlib to a previous version should fix the issue. Thanks!

[christian-oreilly]

Indeed it does. Thanks for the feedback.