Compatibility with bokeh 0.12.10

I followed the instruction on here, and copy the code in examples to a separate file to do some testing, however it only shows:

WARNING:root:notebook_extension: HoloViews bokeh backend could not be imported, ensure bokeh is installed.

Traceback (most recent call last):
  File ".../holoview_test/just_test/test.py", line 4, in <module>
    hv.extension('bokeh')
  File "...\AppData\Local\Continuum\Anaconda3\envs\holoviews\lib\site-packages\param\parameterized.py", line 1888, in __new__
    return inst.__call__(*args,**params)
  File "...\AppData\Local\Continuum\Anaconda3\envs\holoviews\lib\site-packages\holoviews\ipython\__init__.py", line 109, in __call__
    super(notebook_extension, self).__call__(*args, **params)
  File "...\AppData\Local\Continuum\Anaconda3\envs\holoviews\lib\site-packages\holoviews\util\__init__.py", line 248, in __call__
    raise ImportError('None of the backends could be imported')

ImportError: None of the backends could be imported

My env: OS: Win7 Pro SP1 x64 Python: 3.5.4 Package:

• alabaster==0.7.10
• anaconda-client==1.6.5
• anaconda-navigator==1.6.8
• anaconda-project==0.8.0
• asn1crypto==0.22.0
• astroid==1.5.3
• astropy==2.0.2
• babel==2.5.0
• backports.shutil-get-terminal-size==1.0.0
• beautifulsoup4==4.6.0
• bitarray==0.8.1
• bkcharts==0.2
• blaze==0.11.3
• bleach==2.0.0
• bokeh==0.12.10
• boto==2.48.0
• Bottleneck==1.2.1
• CacheControl==0.12.3
• certifi==2017.7.27.1
• cffi==1.10.0
• chardet==3.0.4
• click==6.7
• cloudpickle==0.4.0
• clyent==1.2.2
• colorama==0.3.9
• comtypes==1.1.2
• contextlib2==0.5.5
• cryptography==2.0.3
• cycler==0.10.0
• Cython==0.26.1
• cytoolz==0.8.2
• dask==0.15.2
• datashape==0.5.4
• decorator==4.1.2
• distlib==0.2.5
• distributed==1.18.3
• docutils==0.14
• entrypoints==0.2.3
• et-xmlfile==1.0.1
• fastcache==1.0.2
• filelock==2.0.12
• Flask==0.12.2
• Flask-Cors==3.0.3
• gevent==1.2.2
• glob2==0.5
• greenlet==0.4.12
• h5py==2.7.0
• heapdict==1.0.0
• holoviews==1.8.3
• html5lib==0.999999999
• idna==2.6
• imageio==2.2.0
• imagesize==0.7.1
• ipykernel==4.6.1
• ipython==6.1.0
• ipython-genutils==0.2.0
• ipywidgets==7.0.0
• isort==4.2.15
• itsdangerous==0.24
• jdcal==1.3
• jedi==0.10.2
• Jinja2==2.9.6
• jsonschema==2.6.0
• jupyter-client==5.1.0
• jupyter-console==5.2.0
• jupyter-core==4.3.0
• jupyterlab==0.27.0
• jupyterlab-launcher==0.4.0
• lazy-object-proxy==1.3.1
• llvmlite==0.20.0
• locket==0.2.0
• lockfile==0.12.2
• lxml==3.8.0
• MarkupSafe==1.0
• matplotlib==2.0.2
• mccabe==0.6.1
• menuinst==1.4.8
• mistune==0.7.4
• mpmath==0.19
• msgpack-python==0.4.8
• multipledispatch==0.4.9
• navigator-updater==0.1.0
• nbconvert==5.3.1
• nbformat==4.4.0
• networkx==1.11
• nltk==3.2.4
• nose==1.3.7
• notebook==5.0.0
• numba==0.35.0+10.g143f70e
• numexpr==2.6.2
• numpy==1.13.1
• numpydoc==0.7.0
• odo==0.5.1
• olefile==0.44
• openpyxl==2.4.8
• packaging==16.8
• pandas==0.20.3
• pandocfilters==1.4.2
• param==1.5.1
• partd==0.3.8
• path.py==10.3.1
• pathlib2==2.3.0
• patsy==0.4.1
• pep8==1.7.0
• pickleshare==0.7.4
• Pillow==4.2.1
• pkginfo==1.4.1
• plotly==2.1.0
• ply==3.10
• progress==1.3
• prompt-toolkit==1.0.15
• psutil==5.2.2
• py==1.4.34
• pycodestyle==2.3.1
• pycosat==0.6.2
• pycparser==2.18
• pycrypto==2.6.1
• pycurl==7.43.0
• pyflakes==1.5.0
• Pygments==2.2.0
• pylint==1.7.2
• pyodbc==4.0.17
• pyOpenSSL==17.2.0
• pyparsing==2.2.0
• PySocks==1.6.7
• pytest==3.2.1
• python-dateutil==2.6.1
• pytz==2017.2
• PyWavelets==0.5.2
• pywin32==221
• PyYAML==3.12
• pyzmq==16.0.2
• QtAwesome==0.4.4
• qtconsole==4.3.1
• QtPy==1.3.1
• requests==2.18.4
• rope==0.10.5
• ruamel-yaml==0.11.14
• scikit-image==0.13.0
• scikit-learn==0.19.0
• scipy==0.19.1
• seaborn==0.8
• simplegeneric==0.8.1
• singledispatch==3.4.0.3
• six==1.10.0
• snowballstemmer==1.2.1
• sortedcollections==0.5.3
• sortedcontainers==1.5.7
• Sphinx==1.6.3
• sphinxcontrib-websupport==1.0.1
• spyder==3.2.3
• SQLAlchemy==1.1.13
• statsmodels==0.8.0
• sympy==1.1.1
• tables==3.4.2
• tblib==1.3.2
• testpath==0.3.1
• toolz==0.8.2
• tornado==4.5.2
• traitlets==4.3.2
• typing==3.6.2
• unicodecsv==0.14.1
• urllib3==1.22
• wcwidth==0.1.7
• webencodings==0.5.1
• Werkzeug==0.12.2
• widgetsnbextension==3.0.2
• win-inet-pton==1.0.1
• win-unicode-console==0.5
• wincertstore==0.2
• wrapt==1.10.11
• xlrd==1.1.0
• XlsxWriter==0.9.8
• xlwings==0.11.4
• xlwt==1.3.0
• zict==0.1.2

[Yura52]

Probably, it’s worth mentioning in the installation instructions on the start page of HoloViews?

[philippjfr]

No problem at all, this also confused me frequently. Technically older versions of conda also work but you have to explicitly declare the version you need.