python object not iterable error in function

Question

I have a simple function with the following

comdList = range(0,27)
for t, in comdList:
    print t

However it returns a in object not iterable error

outside the function it works fine. Whats going on??

Óscar López · Accepted Answer · 2013-06-21 03:32:26Z

6

Try this:

for t in comdList:
    print t

The extra comma after the t variable was causing the error, because of it Python thinks that the iterable is going to return a sequence of 1-tuples to unpack - for example: ((1,), (2,)) but instead it received an iterable of single elements.

edited Jun 21, 2013 at 3:32

answered Jun 21, 2013 at 1:24

Óscar López

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3 Comments

Darran Over a year ago

@ Óscar López - oh the comma... duh it it always the most obvious things that you miss thanks

Óscar López Over a year ago

@Darran you're welcome! please don't forget to accept this or any other answer that you find helpful, just click on the check mark to its left ;)

chepner Over a year ago

Actually, for t, in comdList would only work if comdList was a sequence of 1-tuples ( (1,), (2,), ... ), not a sequence of higher-dimension tuples.

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