def to_desctable(self):
    params = (self.dir, self.style, self.asynchronous)
    for (arrow_type, settings) in self.ARROW_DEF.items():
        if ((params == settings) and (not arrow_type.isalpha())):
            label = ('%s %s %s' % (self.node1.label, arrow_type, self.node2.label))
            return [label, self.description]
def to_desctable(self):
    params = (self.dir, self.style, self.asynchronous)
    for (arrow_type, settings) in self.ARROW_DEF.items():
        if ((params == settings) and (not arrow_type.isalpha())):
            label = ('%s %s %s' % (self.node1.label, arrow_type, self.node2.label))
            return [label, self.description]