Cannot start on 16.04 with requests/SSL related import error

Do you have python-openssl installed?
Can you try installing it and trying again please?

(sudo apt-get install python-openssl)

Thanks Peter, yes I appear to have python-openssl already installed,

Hm, yes, actually it seems to be something with urllib3: http://stackoverflow.com/questions/28987891/patch-pyopenssl-for-sslv3-issue

What's the output of these:
apt-cache show python-requests
python -c "import requests; import urllib3; print requests.__version__; print urllib3.__version__"

Sorry for the delay, here's the output,

peter@peter-LIFEBOOK-AH512:~$ apt-cache show python-requests
Package: python-requests
Priority: optional
Section: python
Installed-Size: 248
Maintainer: Ubuntu Developers <email address hidden>
Original-Maintainer: Debian Python Modules Team <email address hidden>
Architecture: all
Source: requests
Version: 2.9.1-3
Depends: python-urllib3 (>= 1.13.1), python:any (<< 2.8), python:any (>= 2.7.5-5~), ca-certificates, python-chardet, python-urllib3 (<< 1.13.2)
Suggests: python-ndg-httpsclient, python-openssl, python-pyasn1
Breaks: httpie (<< 0.9.2)
Filename: pool/main/r/requests/python-requests_2.9.1-3_all.deb
Size: 55552
MD5sum: 8b7ef5daeec5fdf8dbe5ce86d874f9d0
SHA1: ecf947758cab121b6777493994c0909b85a858f9
SHA256: 9c8ece120617d7cb8c7653012756c6a66db7c4b02786e3e6e9b0593222cd6b1d
Description-en: elegant and simple HTTP library for Python2, built for human beings
 Requests allow you to send HTTP/1.1 requests. You can add headers, form data,
 multipart files, and parameters with simple Python dictionaries, and access
 the response data in the same way. It's powered by httplib and urllib3, but
 it does all the hard work and crazy hacks for you.
 .
 Features
 .
   - International Domains and URLs
   - Keep-Alive & Connection Pooling
   - Sessions with Cookie Persistence
   - Browser-style SSL Verification
   - Basic/Digest Authentication
   - Elegant Key/Value Cookies
   - Automatic Decompression
   - Unicode Response Bodies
   - Multipart File Uploads
   - Connection Timeouts
Description-md5: 3f93f5c41e878a095fe3d86ea9983e58
Homepage: http://python-requests.org
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Supported: 5y
Task: edubuntu-desktop-gnome, ubuntustudio-audio, ubuntu-gnome-desktop, ubuntu-sdk, ubuntu-mate-desktop

and

peter@peter-LIFEBOOK-AH512:~$ python -c "import requests; import urllib3; print requests.__version__; print urllib3.__version__"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/requests/__init__.py", line 53, in <module>
    from .packages.urllib3.contrib import pyopenssl
  File "/usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/contrib/pyopenssl.py", line 73, in <module>
    ssl.PROTOCOL_SSLv3: OpenSSL.SSL.SSLv3_METHOD,
AttributeError: 'module' object has no attribute 'PROTOCOL_SSLv3'

Thanks! What about just
python -c "import urllib3; print urllib3.__version__"

It's

1.13.1

Variety now working perfectly, I used the following commands from the link you gave:

pip install requests==2.6.0

and

sudo easy_install --upgrade pip

Happiness! Thanks very much :)

`pip install requests==2.6.0` also worked for me. Variety had stopped working after a recent Ubuntu 16.04 upgrade.

Actually I just did `sudo pip install --upgrade requests` without specifying a version.