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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 lock_host(func, *args, **kwargs):
 """ A decorator that acquires a lock before accessing the debugger to avoid API locking related errors with the debugger host. """

    def inner(self, *args, **kwargs):
        self.host_lock.acquire()
        try:
            res = func(self, *args, **kwargs)
            self.host_lock.release()
        except Exception as e:
            self.host_lock.release()
            raise e
        return res
    return inner