CODEWITHSUNDEEP
pythonlinked-list
Faisal
Faisal

Reputation: 11

Doubly linked list

I am trying to create a doubly linked list..Here is my code but when i run it it is giving me this output: <__main__.DLList object at 0x10269d588>. I don't know how to fix this.

Upvotes: 0

Views: 191

Answers (1)

Alex Martelli
Alex Martelli

Reputation: 881605

You have not defined special methods __str__ or __repr__, so they default to the display you appear to dislike. To get your own display, define such methods.

For example (in the body of DLList) add:

def __str__(self):
    result = []
    cur = self.head
    while cur is not None:
        result.append(repr(cur.data))
        cur = cur.next_node
    return ', '.join(result)

this uses no starting or ending markers, comma separation, and repr (rather than str) for each item -- of course, you can tweak each of these design choices (but beware: using str in lieu of repr can create very confusing displays, identical for lists that are actually quite different).

Upvotes: 1

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