我在databricks笔记本上使用spark，cassandra，spark cassandra连接器，根据他们的网站，我们可以使用'deletefromcassandra'删除行：https://github.com/datastax/spark-cassandra-connector/blob/master/doc/5_saving.md, https://datastax-oss.atlassian.net/browse/sparkc-349 下面是我的python脚本：

def read_table(tableName,kespace, columns):
  dfData = (spark
        .read
        .format("org.apache.spark.sql.cassandra")
        .options(table = tableName, keyspace = kespace)
        .load()
        .select(*columns))
  return dfData 

emails='abc@test.com'.split(",")
df = read_table(my_table, my_keyspace,"*").where(col("email").isin(emails))
df.rdd.deleteFromCassandra(my_keyspace, my_table)

但它失败了：

AttributeError: 'RDD' object has no attribute 'deleteFromCassandra'

注意到他们提供的所有示例都在scala中，这是否意味着函数deletefromcassandra在python中不可用？