为什么是这部分 (~F.col('text').rlike('\bfoo\b') 不起作用？
更新时间：

import pyspark.sql.functions as F

df = spark.createDataFrame(['Some text with foo and more text','Some text with bar and more text'],['value_1',None], "string").toDF("text", "check")

df_new = df.withColumn('check', F.when(((F.col('text').isNotNull()) & \
                                        (F.col('check').isNull() & \
                                        (~F.col('text').rlike('\bfoo\b')), 
                                my_udf(F.col('text'))) \
.otherwise(F.col('check'))

df_new.show(truncate=False)
+----------------------------------------+
|text                            |check  |
+--------------------------------+-------|
|Some text with foo and more text|value_1|
|Some text with bar and more text|       |
+--------------------------------+-------+