Python - ValueError: need more than 1 value to unpack

问题

Please check this question Python oauth2 - making request I am working with vimeo integration in my web application.

Initially I got an oauth_signature and I had no problems(no errors), I tried those things once again from the first and Now I'm getting ValueError: need more than 1 value to unpack while making this request

>>> r = request.get(url, headers=headers)

You can check out my code here https://gist.github.com/2949182

The error is

Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/usr/local/lib/python2.7/dist-packages/requests-0.10.1-py2.7.egg/requests/api.py", line 51, in get
return request('get', url, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/requests-0.10.1-py2.7.egg/requests/api.py", line 39, in request
return s.request(method=method, url=url, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/requests-0.10.1-py2.7.egg/requests/sessions.py", line 159, in request
headers[k] = header_expand(v)
File "/usr/local/lib/python2.7/dist-packages/requests-0.10.1-py2.7.egg/requests/utils.py", line 152, in header_expand
for i, (value, params) in enumerate(headers):
ValueError: need more than 1 value to unpack

Thanks!

UPDATE

>>> headers
{'Authorization': u'oauth_body_hash=XXXXXXXXXXXXXXXXXXXXXXXXXX,oauth_nonce=3454768,oauth_timestamp=1340035585,oauth_consumer_key=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX,oauth_signature_method=HMAC-SHA1,oauth_version=1.0,oauth_signature=XXXXXXXXXXXXXXXXXXXXXXXXXXXXX,oauth_callback=http://127.0.0.1:8000/information/vimeo'}

回答1:

to be able to unpack a dictionary you would have to use the .items(), so the code would be like this:

for i, (value, params) in enumerate(headers.items()):

now since that is not your code and you can't change it, what the error is telling you is that the headers should not be a dictionary but a tuple (or a list), if you pass the header like this: