[Python] Connecting Django with MSSQL server

I'm trying to connect my Django app to SQL Server 2016. I've tried using django-pyodbc but it doesn't support Django 1.11. Instead I installed django-mssql 1.8. When I try to run the application I get this error.

TypeError was unhandled by user code
Message: 'NoneType' object is not callable


At execute_from_command_line(sys.argv) in manage.py.

Here is my DATABASES from settings.py:

DATABASES = {
'default': {
'ENGINE': 'sqlserver_ado',
'NAME': 'TEST2',
'HOST': 'PCNAME\SQLEXPRESS',
'USER': '',
'PASSWORD': '',
'OPTIONS' : {
'provider': 'SQLOLEDB',
'use_mars': True,
},
}
}


I've tried both the default and SQLOLEDB provider but always get the same error. I've also tried with and without user and password set but the error remains the same. I am able to connect to a local MySQL DB just fine.

I'm running Windows 10, Visual Studio 2015, SQL Server Express 2016

Edit:

Here's the output from pip freeze:

appdirs==1.4.3
Django==1.11
django-mssql==1.8
mysqlclient==1.3.10
packaging==16.8
pyodbc==4.0.16
pyparsing==2.2.0
pytz==2017.2
six==1.10.0


Here's my requirements.txt:

django==1.11
mysqlclient==1.3.10
django-mssql==1.8

Continue reading...