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1 | .. _kernel_install: |
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1 | .. _kernel_install: | |
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3 | Installing the IPython kernel |
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3 | Installing the IPython kernel | |
4 | ============================= |
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4 | ============================= | |
5 |
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6 | IPython can be installed (different python versions, virtualenv or conda |
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6 | The Jupyter Notebook and other frontends automatically ensure that the IPython kernel is available. | |
7 | environments) as a kernel for Jupyter by following these steps: |
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7 | However, if you want to use a kernel with a different version of Python, or in a virtualenv or conda environment, | |
8 |
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8 | you'll need to install that manually. | ||
9 | * make sure that the desired python installation is active |
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10 | (e.g. activate the environment, or use absolute paths) |
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11 | and ipykernel is installed |
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12 | * run once ``ipython kernel install --user``, |
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13 | or ``python -m ipykernel install --user`` to ensure a specific Python installation is used. |
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14 | * See `ipython kernel install --help` for the list of installation options like |
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15 | naming the kernel, or non default install location. |
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16 | * The IPython kernel for Jupyter is provided by the `ipykernel` python package, |
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17 | see `ipykernel documentation <http://ipykernel.readthedocs.org/>`_ if you |
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18 | need more flexibility for installation. |
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20 |
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21 | For example: |
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22 |
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23 | .. sourcecode:: bash |
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24 |
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25 | source activate kernel-environment |
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26 | ipython kernel install --user |
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27 | source deactivate kernel-environment |
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28 |
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9 | |||
29 | or |
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10 | Using the Python version or environment for which you want to set up the kernel, run:: | |
30 |
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31 | .. sourcecode:: bash |
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12 | pip install ipykernel # or: conda install ipykernel | |
32 |
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13 | python -m ipykernel install --user | ||
33 | ~/envs/kernel-environment/python -m ipykernel install --user |
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34 |
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35 | The last command installs a :ref:`kernel spec <jupyterclient:kernelspecs>` file |
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15 | The last command installs a :ref:`kernel spec <jupyterclient:kernelspecs>` file | |
36 | for the current python installation. Kernel spec files are JSON files, which |
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16 | for the current python installation. Kernel spec files are JSON files, which | |
37 | can be viewed and changed with a normal text editor. |
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17 | can be viewed and changed with a normal text editor. | |
38 |
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39 |
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19 | See `python -m ipykernel install --help` for the list of installation options like | ||
40 | .. note :: |
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20 | naming the kernel, or non default install location. | |
41 |
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42 | The command `ipython kernelspec` is deprecated and will be removed in future versions. |
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43 |
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44 |
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21 | |||
45 | .. _multiple_kernel_install: |
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22 | .. _multiple_kernel_install: | |
46 |
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47 | Multiple IPython installs |
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24 | Multiple IPython installations | |
48 | ========================= |
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25 | ============================== | |
49 |
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26 | |||
50 | If you want to have multiple IPython kernels for different environments, |
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27 | If you want to have multiple IPython kernels for different environments, | |
51 | you will need to specify unique names for the kernelspecs, |
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28 | you will need to specify unique names for the kernelspecs, | |
52 | and you may also want to specify the display name of those kernels, |
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29 | and you may also want to specify the display name of those kernels, | |
53 | so that you can clearly see which is which in the notebook menus: |
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30 | so that you can clearly see which is which in the notebook menus: | |
54 |
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31 | |||
55 | .. sourcecode:: bash |
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32 | .. sourcecode:: bash | |
56 |
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33 | |||
57 | source activate myenv |
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34 | source activate myenv | |
58 | ipython kernel install --user --name myenv --display-name "Python (myenv)" |
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35 | ipython kernel install --user --name myenv --display-name "Python (myenv)" | |
59 | source activate other-env |
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36 | source activate other-env | |
60 | ipython kernel install --user --name other-env --display-name "Python (other-env)" |
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37 | ipython kernel install --user --name other-env --display-name "Python (other-env)" | |
61 | source deactivate |
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38 | source deactivate | |
62 |
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39 |
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