如何将这个pyspark二进制列转换为字符串？

from pyspark.sql.functions import base64, decode

df = df.withColumn("base64_column", base64(df.binary_column))

df = df.withColumn("string_column", decode(df.base64_column, "UTF-8"))

from pyspark.sql import SparkSession
from pyspark.sql.functions import base64, decode

# 创建SparkSession
spark = SparkSession.builder.getOrCreate()

# 创建示例DataFrame
data = [(1, bytearray(b"Hello")), (2, bytearray(b"World"))]
df = spark.createDataFrame(data, ["id", "binary_column"])

# 将二进制列转换为Base64编码的字符串
df = df.withColumn("base64_column", base64(df.binary_column))

# 将Base64编码的字符串解码为普通字符串
df = df.withColumn("string_column", decode(df.base64_column, "UTF-8"))

# 显示结果
df.show()

+---+-------------+-------------+
| id|binary_column|string_column|
+---+-------------+-------------+
|  1|      SGVsbG8=|         Hello|
|  2|      V29ybGQ=|         World|
+---+-------------+-------------+