<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def foreachPartition(self, f):
 """ Applies a function to each partition of this RDD. """

        def func(it):
            r = f(it)
            try:
                return iter(r)
            except TypeError:
                return iter([])
        self.mapPartitions(func).count()