IPython Notebook - python3 not found after uninsta

问题:

I uninstalled Anaconda 2.3 with Python 3.4.3 and then installed the same Anaconda version with Python 2.7.10.

When I open a notebook via $ ipython notebook "Example Notebook.ipynb" it tries to use the python3 kernel as opposed to opening with the installed python2. Of course I get the error python3 kernel not found.

How can I get ipython notebooks to open with the python2 kernel? I've tried to uninstall ipython and ipython notebook, then delete .ipython and .jupyter from my user directory in case there were any defaults set in these folders, then reinstalled both. Still get the same problem.

Any help would be appreciated

回答1:

You can install several python versions alongside each other. Just create another environment (replace "all my packages" with the names of the packages).

conda create --name mypy_27 python = 2.7

or

conda create --name mypy_34 python = 3.4

afterwards you can activate the environments by typing

source activate mypy_34

if you then do

conda install "all your packages"

you install the desired packages in the active environment.

You can do much more.