def provision(self):

        with self.using(AptitudeRole) as role:
            role.ensure_up_to_date()
            role.ensure_package_installed('python-pycurl')

        with self.using(PipRole) as role:
            role.ensure_package_installed('tornado')
Installs `Tornado <http://www.tornadoweb.org/>`_ and its dependencies.
dataset/ETHPy150Open python-provy/provy/provy/more/debian/web/tornado.py/TornadoRole.provision