1. 日期转时间戳
spark_df_from_csv = spark.read.csv('/data1/AIPlatform/look_order_cross_city_new_deepfm_0116_0130_origin.csv', header=True)
spark_df_from_csv = spark_df_from_csv.withColumn('parsed_log_time', spark_df_from_csv['parsed_log_time'].cast("timestamp"))
spark_df_from_csv = spark_df_from_csv.withColumn('parsed_log_time', F.unix_timestamp(spark_df_from_csv['parsed_log_time']))