pyebnf/primitive.py
def is_empty(self):
    """Returns True if this node has no children, or if all of its children are ParseNode instances
    and are empty.
    """
    return all(isinstance(c, ParseNode) and c.is_empty for c in self.children)
def is_empty(self):
    return all(isinstance(c, ParseNode) and c.is_empty for c in self.children)
def is_empty ( self ) : return all ( isinstance ( c , ParseNode ) and c . is_empty for c in self . children )
Returns True if this node has no children, or if all of its children are ParseNode instances
    and are empty.
Returns True if this node has no children or if all of its children are ParseNode instances and are empty .