将Django与SAP Hana连接

我正在尝试将django与SAP Hana DB连接。我已经按照github中的描述安装了一个后端：https : //github.com/kapilratnani/django_hana并按指定配置了settings.py：

'data_source': {
        'ENGINE':'django.db.backends.django_hana',# I tried also 'django_hana' or 'hello' with the same results
        'NAME': 'IOT',
        'USER': 'ALEX',
        'PASSWORD': 'PASSWORD',
        'HOST': '186.47.255.17',
        'PORT': '30015',
    }

我收到一个连接错误，好像它无法识别引擎：如果在引擎中键入“ hello”，我也会遇到相同的错误。这是错误：

    Unhandled exception in thread started by <function wrapper at 0x7fc2a959f0c8>
Traceback (most recent call last):
  File "/home/django/Env/singolar/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "/home/django/Env/singolar/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 116, in inner_run
    self.check(display_num_errors=True)
  File "/home/django/Env/singolar/lib/python2.7/site-packages/django/core/management/base.py", line 426, in check
    include_deployment_checks=include_deployment_checks,
  File "/home/django/Env/singolar/lib/python2.7/site-packages/django/core/checks/registry.py", line 75, in run_checks
    new_errors = check(app_configs=app_configs)
  File "/home/django/Env/singolar/lib/python2.7/site-packages/django/core/checks/model_checks.py", line 28, in check_all_models
    errors.extend(model.check(**kwargs))
  File "/home/django/Env/singolar/lib/python2.7/site-packages/django/db/models/base.py", line 1172, in check
    errors.extend(cls._check_long_column_names())
  File "/home/django/Env/singolar/lib/python2.7/site-packages/django/db/models/base.py", line 1587, in _check_long_column_names
    connection = connections[db]
  File "/home/django/Env/singolar/lib/python2.7/site-packages/django/db/utils.py", line 212, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "/home/django/Env/singolar/lib/python2.7/site-packages/django/db/utils.py", line 135, in load_backend
    raise ImproperlyConfigured(error_msg)
django.core.exceptions.ImproperlyConfigured: 'django.db.backends.django_hana' isn't an available database backend.
Try using 'django.db.backends.XXX', where XXX is one of:
    'mysql', 'oracle', 'postgresql', 'sqlite3'
Error was: No module named django_hana.base

有什么想法为什么不能识别引擎？