Trying to figure out implementing services pattern

service.py

import maya.cmds as cmds

platform = cmds

class EventService(object):
    def __init__(self):
        self.events = []
        self.event_log = []
        
    def add_event(self, event):
        self.events.append(event)
    
    def process_stack(self):
        for event in self.events:
            print('Processing event %s' % event)
            if self.process_event(event.copy()):
                self.event_log.append(event.copy())
        self.events = []
    
    def process_event(self, event):
        event_type = event.pop('event_type')
        if hasattr(platform, event_type):
            event_function = getattr(platform, event_type)
            event_function(**event)
            return True
        return False
            

def create():
    service = EventService()
    service.add_event({'event_type': 'group', 'name': 'test_group', 'em': True})
    service.process_stack()
    return service.event_log
    
if __name__ == '__main__':
    log = create()
    print(log)