How to create conda environment with specific python version?
I have miniconda3 installed and since I would like to have an environment with python version 3.3.0, I create it via
conda create -n "myenv" python=3.3.0
However when I activate the environment via
conda activate myenv
python has version 2.7.15 and path
/usr/bin/python
and ipython has python version 3.6.8 and path
/home/myname/.local/bin/ipython
I can access the correct python with python3 which is at
/home/myname/miniconda3/envs/mattention/bin/python3
however, ipython3 has python version 3.6.8 again.
conda install python=3.3.0
left the situation unchanged.
A solution would be to open IPython via
python3 -m IPython
however, while this works fine for python here I get the error message
/home/myname/miniconda3/envs/mattention/bin/python3: No module named IPython
Is it possible to access with the commands python and ipython both python version 3.3.0 in that specific environment, i.e. not by setting an alias in the .bashrc?
EDIT:
Turns out that this problem does not occur if you select version 3.3 instead of 3.3.0 together with @ilmarinen's answer
conda create -n "myenv" python=3.3 ipython
everything works fine and python as well as ipython result to version python 3.3.5.
Answer
You need to install ipython as well into your given environment
conda create -n "myenv" python=3.3.0 ipython
The conda environments are prepended to your PATH variable, so when you are trying to run the executable "ipython", Linux will not find "ipython" in your activated environment (since it doesn't exist there), but it will continue searching for it, and eventually find it wherever you have it installed.