sub = {}
for a, b in sub: #<--- error occurs here
for s in b:
#do blah. I was told a b is a list
and it gives me TypeError: unpack non-sequence
What is this mean?
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ealeon
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1 Answers
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Are you looking for this?
for a, b in sub.iteritems():
# Do Something.
Doing
for a, b in sub:
#...
tries to assign (a, b) to a key in sub which may not be a sequence.
Sukrit Kalra
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Use [`iteritems()`](http://docs.python.org/2/library/stdtypes.html#dict.iteritems) where possible :) – woozyking Jul 24 '13 at 16:44
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yes. grrr the tutorial i was looking at was wrong then... – ealeon Jul 24 '13 at 16:45
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is there any difference between the iteritems() and items()? – ealeon Jul 24 '13 at 16:46
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`iteritems()` returns an iterator, which Python version are you on? – Sukrit Kalra Jul 24 '13 at 16:47
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@woozyking: I don't know what version he is on. `items()` returns an iterator in Python 3.x. – Sukrit Kalra Jul 24 '13 at 16:48
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1@ealeon: Then use `iteritems()`. – Sukrit Kalra Jul 24 '13 at 16:49