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Using the R Statistics Package with Python Scripts
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  >>> from cybertools.pyscript.tests import Root
  >>> from cybertools.pyscript.script import PythonScript

  >>> pp = PythonScript()
  >>> pp.__parent__ = Root()
  >>> pp.__name__ = 'pp'
  >>> request = None

  >>> pp.setSource(u"return 'Hello World'")
  >>> pp(request)
  'Hello World'

  >>> source = """
  ... data = [('r1', 'c1', 1),
  ...         ('r1', 'c2', 1),
  ...         ('r1', 'c3', 0),
  ...         ('r2', 'c1', 0),
  ...         ('r2', 'c2', 1),
  ...         ('r2', 'c3', 1),
  ...         ('r3', 'c1', 0),
  ...         ('r3', 'c2', 1),
  ...         ('r3', 'c3', 0),
  ...         ('r4', 'c1', 1),
  ...         ('r4', 'c2', 1),
  ...         ('r4', 'c3', 1),
  ...         ('r5', 'c3', 1),
  ... ]
  ... matrix = rstat.getDataFrame(data)
  ... #return matrix
  ... #return rstat.intermediateData
  ... x = rpy.with_mode(rpy.BASIC_CONVERSION, r.descript)(matrix)
  ... return x
  ... """
  >>> pp.setSource(source)
  >>> result = pp(request)
  <BLANKLINE>
  This is package 'ltm' ...
  <BLANKLINE>
