easy way to use both python 2.x and 3.x in ipython notebook anaconda version in Windows 10?

Question

I am using Windows 10. I have anaconda2 64bit installed. I have been using python 2.7. In my C drive, I see a folder for Python27 and one for Python34. I see a python executable in the Python27 folder but not in the Python34 folder. if I run

where anaconda 

in DOS I get

C:\ProgramData\Anaconda2\Scripts\anaconda.exe 

and in that directory, I also see a python.exe file. I tried the following in Windows Powershell

conda create -n ipykernel_py3 python=3 ipykernel
activate ipykernel_py3
python -m ipykernel install --user

and then I restarted ipython notebook. I don't see a version of python 3 when I use the pulldown "new" button on the ipython notebook gui (on the right hand side). Can anyone say what is wrong? I was following http://ipython.readthedocs.io/en/stable/install/kernel_install.html Thank you.

Answer 1

configure the python2.7 environment:

conda create -n py27 python=2.7 
source activate py27 
conda install notebook ipykernel 
ipython kernel install --user

configure the python3.4 environment:

conda create -n py34 python=3.4 
source activate py34 
conda install notebook ipykernel 
ipython kernel install --user