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I'm trying to install python 3.9 in a conda enviroment. I tried creating a new conda env using the following command,

conda create --name myenv python=3.9

But I got an error saying package not found because python 3.9 is not yet released

So, I manually created a folder in envs folder and tried to list all envs. But I couldn't get the manually created new environment.

So, how do I install python 3.9 in a conda env with all functionalities like pip working?

Gino Mempin
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bigbounty
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3 Answers3

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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
bigbounty
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    Is the information on installing Python 3.9 directly, pip, etc. really necessary? – AMC Sep 05 '20 at 00:45
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    Why? As far as I can tell, it's more or less the same procedure for installing any version of Python 3, right? – AMC Sep 07 '20 at 22:19
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    Most folks use `python3.x -m pip` to run the PIP that belongs to a specific release of Python. This is particularly important when using virtual environments like those created by conda. – S.Lott Sep 24 '20 at 00:13
  • `python -m pip` is the recommended way to call pip. Not `pip`. – Nzbuu Oct 06 '20 at 22:40
  • I did this and still when I type `python --version` I get `Python 3.7.9`. Do I need to set my environment to the newly created environment? – Addem Jan 17 '21 at 18:39
  • @Addem you need to activate your newly created environment - `conda activate py39` – bigbounty Jan 18 '21 at 01:25
  • what's meaning of that "-n" – Ernie Sender Feb 24 '21 at 17:10
  • `-n` - environment name – bigbounty Feb 24 '21 at 17:30
  • Does not Work --->`$ conda create -n demo-py39 python=3.9 \ Fetching package metadata ........... \ PackageNotFoundError: Package missing in current win-64 channels: - python 3.9* ` BUT this DOES WORK `conda create -c conda-forge python=3.9 -n py39-demo` – Timothy L.J. Stewart Apr 24 '21 at 15:26
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    @TimothyL.J.Stewart The command is working fine in my Mac. Probably it's the case only with windows I guess – bigbounty Apr 24 '21 at 15:40
  • @bigbounty the culprit was 4.3 `conda --version` the fix was `conda update conda` then this works – Timothy L.J. Stewart Apr 25 '21 at 17:57
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On 6-Oct-2020, Python 3.9 was made available on conda-forge: https://anaconda.org/conda-forge/python. However, most of the other packages (including some of the essentials to create a basic environment) didn't explicitly support Python 3.9 yet.

However (as of 15-Oct-2020), the basic dependencies appear to have been fixed and the following command now works:

conda create -c conda-forge python=3.9 -n py39-demo
Nzbuu
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6

You can now simply just run

conda create --name myenv python=3.9

And it will create your python 3.9 virtual environment simply.

Mohamed Sayed
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