Here's the line that throws this error
(x,neighbor) = random.sample(out_edge_list,1)
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51answers:
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A:
You're asking for 1 unique random element. So you're getting back something like [5]. If the 5 goes into x, what goes into neighbor?
Perhaps you meant to ask for 2 elements?
(x, neighbor) = random.sample(out_edge_list, 2)
Laurence Gonsalves
2010-07-13 20:53:08
@Laurence: Actually the list contains tuples
Bruce
2010-07-13 21:04:07
@Bruce: Even if the list contains tuples, you're asking for a list of one element, so you're effectively saying `(x, neighbor) = [(1,2)]`. There's a difference between a list of one element and one element.
Laurence Gonsalves
2010-07-13 22:11:58
@Bruce: Try using `choice` instead of `sample`. `choice` will return one random element without wrapping it in a list.
Laurence Gonsalves
2010-07-13 22:12:44
A:
Here the solution. I changed the line to
(x,neighbor) = random.sample(out_edge_list,1)[0]
Bruce
2010-07-13 21:06:43
As Laurence pointed out above, that could be expressed more simply and clearly as `random.choice(out_edge_list)`.
Will McCutchen
2010-07-13 22:20:38