Install python packages in virtual Conda environment

[chenhui.jin]

Hi all,

I’m trying to install two python packages (CPyS and tempest-extremes) on (/scratch/gb02/cj0591/).

CPyS can be simply installed by pip, however, tempest-extremes needs to be installed by conda. In this case, I am struggling in create my own conda environment, and get these two package installed.

Regards,
Chenhui

[lachlanswhyborn (Lachlan Whyborn)]

Hi,

I’m assuming you are using Gadi? If yes, then you should be able to follow the guide from UNSW here. If you have problems, let me know.

[chenhui.jin]

Hi @lachlanswhyborn,

Yes, I am using Gadi and thanks for sending the guide. I successfully created my own conda environment under /scratch/gb02/cj0591, and installed CPyS.

However, I failed to install tempest-extremes:

I tried
conda install -c conda-forge tempest-extremes

[lachlanswhyborn (Lachlan Whyborn)]

Sorry, seems that the particular page I linked is a bit out of date- they have recently moved to Github blogs. Here is their piece on custom python environments.

The gist of it is:

• Load the hh5 conda environment via module
• Use a virtual environment by python3 -m venv <env_name> --system-site-packages && source <env_name>/bin/activate
• Install package via pip pip install <package>

Alternatively, you can skip the virtual environment creation and just call
pip install --user <package>.

[chenhui.jin]

I followed the instruction to create the environment (myenv2) and activate it and installed CPyS. However, I still couldn’t install tempest-ctremes (see errors below)

[Scott (Scott Wales)]

conda install will install into the active environment, which is trying to install into the shared environment you don’t have write permissions to. Use conda create instead to create a new environment e.g. to create one named named tempest:

conda create -n tempest -c conda-forge tempest-extremes

You will then need to conda activate the environment to use it.

[chenhui.jin]

Thanks! I installed it successfully.