Server does not run with python2, requires 'factory'

[aLuViAn87]

~/Temp/meethub$ python manage.py runserver
  File "manage.py", line 14
    ) from exc
         ^
SyntaxError: invalid syntax

Using Python3 it results:

~/Temp/meethub$ python3 manage.py runserver
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7ffa9a5c3378>
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/django/utils/autoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/django/core/management/commands/runserver.py", line 112, in inner_run
    autoreload.raise_last_exception()
  File "/usr/local/lib/python3.5/dist-packages/django/utils/autoreload.py", line 248, in raise_last_exception
    raise _exception[1]
  File "/usr/local/lib/python3.5/dist-packages/django/core/management/__init__.py", line 327, in execute
    autoreload.check_errors(django.setup)()
  File "/usr/local/lib/python3.5/dist-packages/django/utils/autoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/usr/local/lib/python3.5/dist-packages/django/apps/registry.py", line 89, in populate
    app_config = AppConfig.create(entry)
  File "/usr/local/lib/python3.5/dist-packages/django/apps/config.py", line 90, in create
    module = import_module(entry)
  File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 986, in _gcd_import
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 956, in _find_and_load_unlocked
ImportError: No module named 'factory'

After installation of factory module :

~/Temp/meethub$ pip3 install factory /usr/local/lib/python3.5/dist-packages/pip/_vendor/requests/__init__.py:83: RequestsDependencyWarning: Old version of cryptography ([1, 2, 3]) may cause slowdown. warnings.warn(warning, RequestsDependencyWarning) Requirement already satisfied: factory in /usr/local/lib/python3.5/dist-packages (1.2)
Still it is looking for "factory" module