Using virtualenv

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virtualenv is a tool to create isolated Python environments. See https://virtualenv.pypa.io/en/latest/index.html

Setting up virtualenv on the cod-nodes/abel

module load python2
virtualenv my_python_dir

will create locally a python tree.

Then you can run

cd my_python_dir
./bin/activate

And you're ready to go.

This is a fix necessary for abel and the cod nodes, normally not necessary:

unset PYTHONPATH

Deactivating the environment

deactivate

Using an existing virtual env

cd my_python_dir
./bin/activate

Installing modules in your virtualenc

Activate and then run

pip install module_name