Django Oauth Toolkit: POST to Token Generation Service Fails but Curl Succeeds

[Foobar]

Using Django OAuth Toolkit, I have authorization_grant_type set to password
and skip_authorization set to true. I am able to generate tokens and
refresh tokens using curl without an issue using the following command:

curl -X POST -d
"grant_type=password&username=username&password=password"
http://p6ge67ihXcwECuy7Z7iomyv16VlEk4uX6B886UWl:***@localhost:8000/o/token/

But when I try substituting this command with a POST and invoke that POST
from a Django view, I get the following:

<Response [401]>
Unauthorized: /o/token/

Any clue why this happening? My POST code is as follows:

data = {
'grant_type': 'password',
'username': 'username',
'password': 'password'
}

response =
requests.post('http://p6ge67ihXcwECuy7Z7iomyv16VlEk4uX6B886UWl:***@localhost:8000/o/token/',
data=data)

What am I missing? Any help would be greatly appreciated. Thanks.