(self)
Check whether all variables have been set.

        Raises:
            ValueError: if the streamer has not yet been fully configured.
Check whether all variables have been set.
Check whether all variables have been set .
def _ready(self):
        """Check whether all variables have been set.

        Raises:
            ValueError: if the streamer has not yet been fully configured.
        """
        if self._sketch is None:
            raise ValueError('Sketch has not yet been set.')
def _ready ( self ) : if self . _sketch is None : raise ValueError ( 'Sketch has not yet been set.' )