Quoting Nathan Pinno <[EMAIL PROTECTED]>:
> Here is the error:
>
> Traceback (most recent call last):
> File "D:\Python24\password.py", line 91, in -toplevel-
> save_file(sitelist)
> File "D:\Python24\password.py", line 22, in save_file
> for site,ID,passcard in sitelist.items():
> ValueError: need more than 2 values to unpack
>
> Here is the code:
>
> sitelist = {}
sitelist is a dictionary. Let's see what the .items() method on dictionaries
does:
>>> d = { 1:'foo', 2:'bar', 3:'baz' }
>>> d.items()
[(1, 'foo'), (2, 'bar'), (3, 'baz')]
So, if we iterate over d.items(), we are iterating over a list of tuples, each
two elements long.
>>> for item in d.items():
... print item
...
(1, 'foo')
(2, 'bar')
(3, 'baz')
Now, we can "unpack" tuples. For example:
>>> t = (1, 2)
>>> x, y = t
>>> x
1
>>> y
2
This only works if both sides of the = have the same number of things.
>>> t = (1, 2, 3)
>>> x, y = t # Not enough variables on the left hand side.
Traceback (most recent call last):
File "<stdin>", line 1, in ?
ValueError: too many values to unpack
>>> x, y, z, w = t # Too many variables on the left hand side.
Traceback (most recent call last):
File "<stdin>", line 1, in ?
ValueError: need more than 3 values to unpack
Now can you figure out what the ValueError you were getting means?
--
John.
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