I’m relatively new in macOS. I’ve just installed XCode (for c++ compiler) and Anaconda with the latest Python 3 (for myself). Now I’m wondering how to install properly second Anaconda (for work) with Python 2?
I need both versions to work with iPython and Spyder IDE. Ideal way is to have totally separate Python environments. For example, I wish I could write like
conda install scikit-learn for Python 3 environment and something like
conda2 install scikit-learn for Python 2.
There is no need to install Anaconda again. Conda, the package manager for Anaconda, fully supports separated environments. The easiest way to create an environment for Python 2.7 is to do
conda create -n python2 python=2.7 anaconda
This will create an environment named
python2 that contains the Python 2.7 version of Anaconda. You can activate this environment with
source activate python2
This will put that environment (typically
~/anaconda/envs/python2) in front in your
PATH, so that when you type
python at the terminal it will load the Python from that environment.
If you don’t want all of Anaconda, you can replace
anaconda in the command above with whatever packages you want. You can use
conda to install packages in that environment later, either by using the
-n python2 flag to
conda, or by activating the environment.
Edit!: Please be sure that you should have both Python installed on your computer.
Maybe my answer is late for you but I can help someone who has the same problem!
You don’t have to download both
If you are using
Jupyter in Anaconda environmen and,
If you have already Anaconda 2 type in Terminal:
python3 -m pip install ipykernel python3 -m ipykernel install --user
If you have already Anaconda 3 then type in terminal:
python2 -m pip install ipykernel python2 -m ipykernel install --user
Then before use
Spyder you can choose Python environment like below!
Sometimes only you can see root and your new Python environment, so root is your first anaconda environment!
Also this is Jupyter. You can choose python version like this!
I hope it will help.
This may be helpful if you have more than one python versions installed and dont know how to tell your ide’s to use a specific version.
anaconda. Latest version can be found here
createand then choose your python version in that.
Hope it helps!!