python: cannot concatenate 'str' and 'long' objects

Question

I\'m trying to set up a choice field in django, but I don\'t think this is a django issue. The choices field takes an iterable (e.g., a list or tuple) of 2-tuples to use as

Answer 1

self.fields['question_' + question.id]

That looks like the problem. Try

"question_%f"%question.id

or

"question_"+ str(question.id)