iPython with different env (using anaconda)

Question

I have just created a new env with python 3.5 using anaconda (called it python35). My root env points to python 2.7.11. I cant seem to launch ipython with this new env, here is

Answer 1

I could confirm the solution above (basically install notebook in active environment) in my case. Two updates from my side:

1. Since Anaconda 4.4 (?) ipython notebook is now jupyter notebook. So I had to install jupyter instead. I guess, deactivate and activate was required afterwards to get the path variables in notebook updated -> checked by python -c "import sys; print(sys.path)" or corresponding command in notebook.

2. If you aren't using a isolated anaconda environment, you may eventual calling the notebook package from your native OS-Python installation, instead the desired from Anaconda. Similarly, I had trouble with cmake or cxx, when I try to compile in Anaconda Environment - the diffent root folder might found in linux bash with e.g "which jupyter"

Answer 2

An addition to Andrey Sobolev solution,you should switch to conda install ipython for higher python3.x version and log out the environment by Ctrl+D or conda deactivate then activate again

Answer 3

AFAIK, different environments in anaconda (and in venv as well) are activated by prepending env path to $PATH environment variable. It means, that if some file (eg, ipython) is not found in env path (the first entry of $PATH), the system searches for it in consequent entries of $PATH and finds it in root environment (that stays in $PATH). To fix the behavior, you need to install its own copy of ipython to anaconda env:

1. In command prompt, activate the environment: source activate python35 (or simply activate python35, depending on the OS)
2. While in environment, issue the command conda install ipython-notebook