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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 count(self, event_str, inc_int=1):
 """Count an event. Args: event_str: The name of an event to count. Used as a key in the event dict. The same name will also be used in the summary. inc_int: int Optional argument to increase the count for the event by more than 1. """

        self._event_dict.setdefault(event_str, 0)
        self._event_dict[event_str] += inc_int