To create python 3.11 conda environment use the following command
conda create -n py311 python=3.11
py311 - environment name
Update 3
To create python 3.10 conda environment use the following command
conda create -n py310 python=3.10
py310 - environment name
Update 2
You can now directly create python 3.9 environment using the following command
conda create -n py39 python=3.9
py39 - environment name
Update 1
Python 3.9 is now available in conda-forge.
To download the tar file – https://anaconda.org/conda-forge/python/3.9.0/download/linux-64/python-3.9.0-h852b56e_0_cpython.tar.bz2
Anaconda Page – https://anaconda.org/conda-forge/python
As pointed out in the comments, python 3.9 is not yet there on any channels. So, it cannot be install yet via conda.
Instead, you can download the python 3.9 executable and install it.
Once the installation is done, a new executable will be created for python 3.9 and pip 3.9 will be created.
Python:
python3.7
python3.7-config
python3.7m
python3.7m-config
python3.9
python3.9-config
pip
pip
pip3
pip3.7
pip3.8
pip3.9
pipreqs
In order to install ipython for python 3.9,
pip3.9 install ipython