Method split

dedalus/core/operators.py:259–264

Split into expressions containing and not containing specified operands/operators.

(self, *vars)

class NonlinearOperator(Future):

    def split(self, *vars):
        """Split into expressions containing and not containing specified operands/operators."""
        if self.has(*vars):
            return (self, 0)
        else:
            return (0, self)

    def expand(self, *vars):
        """Expand expression over specified variables."""