Error using OAuth2 to connect to dropbox in Python

Question

On my Raspberry Pi running raspbian jessie I tried to go through the OAuth2 flow to connect a program to my dropbox using the dropbox SDK for Python which I installed via pip.

For a test, I copied the code from the documentation (and defined the app-key and secret, of course):

from dropbox import DropboxOAuth2FlowNoRedirect

auth_flow = DropboxOAuth2FlowNoRedirect(APP_KEY, APP_SECRET)

authorize_url = auth_flow.start()
print "1. Go to: " + authorize_url
print "2. Click \"Allow\" (you might have to log in first)."
print "3. Copy the authorization code."
auth_code = raw_input("Enter the authorization code here: ").strip()

try:
    access_token, user_id = auth_flow.finish(auth_code)
except Exception, e:
    print('Error: %s' % (e,))
    return

dbx = Dropbox(access_token)

I was able to get the URL and to click allow. When I then entered the authorization code however, it printed the following error:

Error: 'str' object has no attribute 'copy'

Using format_exc from the traceback-module, I got the following information:

Traceback (most recent call last):
  File "test.py", line 18, in <module>
    access_token, user_id = auth_flow.finish(auth_code)
  File "/usr/local/lib/python2.7/dist-packages/dropbox/oauth.py", line 180, in finish
    return self._finish(code, None)
  File "/usr/local/lib/python2.7/dist-packages/dropbox/oauth.py", line 50, in _finish
    url = self.build_url(Dropbox.HOST_API, '/oauth2/token')
  File "/usr/local/lib/python2.7/dist-packages/dropbox/oauth.py", line 111, in build_url
    return "https://%s%s" % (self._host, self.build_path(target, params))
  File "/usr/local/lib/python2.7/dist-packages/dropbox/oauth.py", line 89, in build_path
    params = params.copy()
AttributeError: 'str' object has no attribute 'copy'

It seems the build_path method expects a dict 'params' and receives a string instead. Any ideas?

What version of the library are you using? See github.com/dropbox/dropbox-sdk-python/issues/31... this should be fixed in 3.42. — user94559
– user94559, Commented Nov 21, 2015 at 19:56
Thank you! I have 3.41. So I will wait until 3.42 is available. — Andy_Capone
– Andy_Capone, Commented Nov 21, 2015 at 20:36
What do you mean "wait until 3.42 is available?" That's the current version on PyPI. — user94559
– user94559, Commented Nov 21, 2015 at 20:54
I git-cloned it after your comment and it was 3.41? I'll give it a try again tomorrow. — Andy_Capone
– Andy_Capone, Commented Nov 21, 2015 at 23:42
Huh. PyPI definitely has 3.42, but it does look like maybe that's not on GitHub. I'll look into it. — user94559
– user94559, Commented Nov 22, 2015 at 11:33

Community · Accepted Answer · 2017-05-23 11:59:23Z

1

Thanks to smarx for his comment. The error is a known issue and will be fixed in version 3.42 of the SDK. source

edited May 23, 2017 at 11:59

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answered Nov 21, 2015 at 20:39

Andy_Capone

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1 Comment

user94559 Over a year ago

Correction: was fixed in 3.42. :-)

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