Issue with install celery[redis]

Error output

For some reason installing celery with the redis bundle failed with the error below.

Begin output of pip install  celery[redis]==3.1.3 ----
STDOUT: Downloading/unpacking celery[redis]==3.1.3
Cleaning up...
Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 270, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/usr/local/lib/python2.7/dist-packages/pip/req.py", line 1197, in prepare_files
    for subreq in dist.requires(req_to_install.extras):
  File "build/bdist.linux-x86_64/egg/pkg_resources.py", line 2497, in requires
    "%s has no such extra feature %r" % (self, ext)
UnknownExtra: celery 3.1.3 has no such extra feature 'redis'

Storing debug log for failure in /root/.pip/pip.log
STDERR:
---- End output of pip install  celery[redis]==3.1.3 ----
Ran pip install  celery[redis]==3.1.3 returned 2

Solution

The fix was to change the version number to the latest version, 3.1.7.

$ pip install celery[redis]==3.1.7