def setup_virtualenv():
    run('virtualenv -p %(python)s --no-site-packages %(env_path)s;' % env)
    run('source %(env_path)s/bin/activate; easy_install -U setuptools; easy_install -U pip;' % env)
Setup a fresh virtualenv.
dataset/ETHPy150Open ireapps/census/censusweb/fabfile.py/setup_virtualenv