I know the obvious answer is to use virtualenv and virtualenvwrapper, but for various reasons I can\'t/don\'t want to do that.
So how do I modify the command
Newer versions of pip (8 or later) can directly use the --prefix option:
pip
pip install --prefix=$PREFIX_PATH package_name
where $PREFIX_PATH is the installation prefix where lib, bin and other top-level folders are placed.
$PREFIX_PATH