pip installing fails with python2.7

[DanielKN]

If django-jenkins is pip installed on its own, the setup.py will pull in django v.2.0, which will result in the following error in a python2.7 environment.

see: https://code.djangoproject.com/ticket/28878

(pip version 9.0.1)
pip install django-jenkins

Stacktrace:

Collecting django-jenkins
  Downloading django_jenkins-0.110.0-py2.py3-none-any.whl
Collecting Django>=1.8 (from django-jenkins)
  Downloading Django-2.0.tar.gz (8.0MB)
    100% |████████████████████████████████| 8.0MB 6.1MB/s 
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-NCKqyN/Django/setup.py", line 32, in <module>
        version = __import__('django').get_version()
      File "django/__init__.py", line 1, in <module>
        from django.utils.version import get_version
      File "django/utils/version.py", line 61, in <module>
        @functools.lru_cache()
    AttributeError: 'module' object has no attribute 'lru_cache'

Although in most cases, django is already installed to the desired version, this error won't occur.

[kmmbvnr]

django 2.0 have no python 2.7 support. It's not django-jenkins problem

[DanielKN]

Sorry, I more meant that django-jenkins setup.py could ensure that it doesn't pull in incompatible versions if django, e.g if its python2.7 env, pin it between 1.8 -1.11, Is there a downside to adding this to the setup.py?