rdd.py 文件源码

def filter(self, f):
        """
        Return a new RDD containing only the elements that satisfy a predicate.

        >>> rdd = sc.parallelize([1, 2, 3, 4, 5])
        >>> rdd.filter(lambda x: x % 2 == 0).collect()
        [2, 4]
        """
        def func(iterator):
            return filter(f, iterator)
        return self.mapPartitions(func, True)