fetch_checklists from card fails

[fabceolin]

See the error when I tryied to get the checklists.
Thanks

cards = board.get_cards(card_filter='open')
c0 = cards[0]
c0.fetch_checklists()
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-9-08ec974f514e> in <module>()
----> 1 c0.fetch_checklists()

c:\miniconda3\lib\site-packages\trello\card.py in fetch_checklists(self)
    198         json_obj = sorted(json_obj, key=lambda checklist: checklist['pos'])
    199         for cl in json_obj:
--> 200             checklists.append(Checklist(self.client, self.checked, cl,
    201                                         trello_card=self.id))
    202         return checklists

AttributeError: 'Card' object has no attribute 'checked'

[johandahlberg]

I ran across the same problem - it seems that if you first do c0.fetch() you can work around this. Otherwise the checked attribute is not initiated.