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You will need to install virtualenv. This can install packages into a location that you have permissions and will integrate the virtual environment with the python interpreter from your system. The package can be found at https://pypi.python.org/pypi/virtualenv.
I suggest you follow the route install locally (of course if you can’t install it global).
From the docs
$ curl -O https://pypi.python.org/packages/source/v/virtualenv/virtualenv-X.X.tar.gz
$ tar xvfz virtualenv-X.X.tar.gz
$ cd virtualenv-X.X
$ python virtualenv.py myVE
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