(self, o)
Concatenate the other expansion on to this one.
Concatenate the other expansion on to this one.
Concatenate the other expansion on to this one .
def concat(self, o):
        """Concatenate the other expansion on to this one."""
        if o.simple:
            self.appendstr(o.s)
        else:
            self.extend(o)
def concat ( self , o ) : if o . simple : self . appendstr ( o . s ) else : self . extend ( o )