Download and install
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``PyChem`` is part of ``GEAR``.
``GEAR`` may be downloaded using the open source version control system `git <http://git-scm.com>`_::

  git clone ssh://obslogin1.unige.ch/www/people/revaz/public/git/gear gear
  
  
To install ``PyGear``::

  cd gear/PyChem/
  python setup.py install
  
or if you want to install it in a particular directory ::

  python setup.py install --prefix /your/prefered/directory