I a trying to retrieve all the comments of a video via Python iteration/paging. I am logged correctly with a developer key
import googleapiclient.discovery
According to Google's Python Client Library sample code and to Google's Youtube API sample code, you should have been coding your pagination loop as shown below:
request = yt.commentThreads().list(...)
while request:
response = request.execute()
# your processing code goes here ...
request = yt.commentThreads().list_next(request, response)