retrieve key of only element in a dictionary (Python 3)

[Fillmore]

I must be missing something simple, but...

Python 3.4.0 (default, Apr 11 2014, 13:05:11)
[GCC 4.8.2] on linux
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 >>> d = dict()
 >>> d['squib'] = "007"
 >>> # I forget that 'squib' is my key to retrieve the only element in d
...
 >>> type(d.items())
<class 'dict_items'>
 >>> key = d.items()[0]
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
TypeError: 'dict_items' object does not support indexing
 >>> key,_ = d.items()
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
ValueError: need more than 1 value to unpack
 >>> key,b = d.items()
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
ValueError: need more than 1 value to unpack
 >>> print(d.items())
dict_items([('squib', '007')])
 >>> print(d.items()[0])
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
TypeError: 'dict_items' object does not support indexing
 >>>

what am I missing? I don't want to iterate over the dictionary.
I know that there's only one element and I need to retrieve the key

thanks