Long time python hacker, new to netapp as well. Check the perl docs for cDOT api references ( doc/perldoc/OntapClusterAPI.html ) just remeber that the calls for perl are things like system_api_list you would actually be the api call 'system-api-list' so `s.invoke('system-api-list')` or `s.invoke_elem(NaElement('system-api-list', ''))`. If you need to pass paramaters to a call it's just `s.invoke(api, parameter1, value1, parameter2, value2, ...)`
A lot of calls end in `get-iter` which all follow the same pattern of needing the tag recycled to fetch more. Here is one example.
https://community.netapp.com/t5/Software-Development-Kit-SDK-and-API-Discussions/python-code-for-calling-the-quota-report-iter-API/td-p/121805
Be careful there since setting the version to 1,3 will preclude you setting the vserver... you need 1,15 or higher to set the vserver. The code itself is not very clean and is very ugly, I've started to put wrappers around the NetApp code to simplify things.
If you want there is a full set of all API references in a javadoc style format stored in the jar file for zexplore ( unzip zexplore.jar and look in the doc folder. )