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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def cli(env, ack_all):
 """Summary and acknowledgement of upcoming and ongoing maintenance events"""


    manager = AccountManager(env.client)
    events = manager.get_upcoming_events()

    if ack_all:
        for event in events:
            result = manager.ack_event(event['id'])
            event['acknowledgedFlag'] = result
    env.fout(event_table(events))