OAuth2 in Datacenter 8.20.11

[Brian Craigie]

I was trying to follow https://developer.atlassian.com/server/jira/platform/oauth/ to create a Python program to access the REST API, but I realise this is for Server rather than Datacenter which is what we have (the name "server" is a bit confusing!).

I can't seem to find any documentation for OAuth2 to access the REST API for Datacenter.  The example Python scripts linked off that oauth page are ancient (Python 2 and Oauth 1.0a) where I'm using Python 3.8 and want to use OAuth 2.

For example (ourserver replaces our actual server name):

http://ourserver/jira/plugins/servlet/oauth/request-token

 Doesn't exist

Neither does 

http://ourserver/rest/oauth2/latest/authorize

They both give a skull image and 404 message.

Can anyone point me to the correct documentation for this please, or let me know the correct URLs for this?

Many thanks :-)