Google Calendar & Python

[volcano63]

Event event = new Event()
    .setSummary("Google I/O 2015")
    .setLocation("800 Howard St., San Francisco, CA 94103")
    .setDescription("A chance to hear more about Google's developer products.");

set end date and time:

DateTime endDateTime = new DateTime("2015-05-28T17:00:00-07:00");
EventDateTime end = new EventDateTime()
    .setDateTime(endDateTime)
    .setTimeZone("America/Los_Angeles");
event.setEnd(end);

Note that there is a 'new' for each step.
I don't see similar code in your script

This is not Python code (new ?!) - looks like you've forgotten to select Python tab