def __init__( self, notebook = None ):
if notebook is None:<EOL><INDENT>self._notebook = epyc.LabNotebook()<EOL><DEDENT>else:<EOL><INDENT>self._notebook = notebook<EOL><DEDENT>self._parameters = dict()<EOL>
Create an empty lab.

        :param notebook: the notebook used to store results (defaults to an empty :class:`LabNotebook`)