+ "clean_home": dict({
+ "name": "cleanHome",
+ "help": "Set to True all preexistent directories in the home "
+ "directory of each sliver will be removed before the "
+ "start of the experiment.",
+ "type": Attribute.BOOL,
+ "value": False,
+ "flags": Attribute.ExecReadOnly | Attribute.ExecImmutable,
+ "validation_function": validation.is_bool
+ }),