> My brain has gone squishy. :-) I know the feeling... > Here is the error message: >>>> from linkedPriorityQueue import * > Traceback (most recent call last): > File "<stdin>", line 1, in ? > File "linkedPriorityQueue.py", line 27 > else node.cargo <= self.head.cargo: > ^ > SyntaxError: invalid syntax else: or elif condition: but not else condition: HTH, Alan G.