"'int' object is not iterable" iterating over a dict

[Diez B. Roggisch]

mmiikkee13 schrieb:
>>>> a_list = range(37)
>>>> list_as_dict = dict(zip(range(len(a_list)), [str(i) for i in a_list]))
>>>> for k, v in list_as_dict:
> ...     print k, v
> ...
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> TypeError: 'int' object is not iterable
> 
> What 'int' object is this referring to? I'm iterating over a dict, not
> an int.

Because

for name in dictionary:


will bind name to the *keys* of dictionary. Thus you end up with an int.

Then the tuple-unpacking occurs:

k, v = <number>

Which is equivalent to

k = <number>[0]
v = <number>[1]

And because <number> isn't iterable, it will fail.

Use

for k, v in dictionary.iteritems():


instead.

Diez