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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 before_run(self):
 """Initialize the scheduling process"""

        # Actions and checks counters
        self.nb_checks = 0
        self.nb_internal_checks = 0
        self.nb_checks_launched = 0
        self.nb_actions_launched = 0

        self.nb_checks_results = 0
        self.nb_checks_results_timeout = 0
        self.nb_checks_results_passive = 0
        self.nb_checks_results_active = 0

        self.nb_actions_results = 0
        self.nb_actions_results_timeout = 0
        self.nb_actions_results_passive = 0

        self.nb_broks_dropped = 0
        self.nb_checks_dropped = 0
        self.nb_actions_dropped = 0

        # Broks, notifications, ... counters
        self.nb_broks = 0
        self.nb_notifications = 0
        self.nb_event_handlers = 0
        self.nb_external_commands = 0

        self.ticks = 0