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[Solved] How to create a udf in PySpark which returns an array of strings?

Hello Guys, How are you all? Hope You all Are Fine. Today I get the following error How to create a udf in PySpark which returns an array of strings? in python. So Here I am Explain to you all the possible solutions here.

Without wasting your time, Let’s start This Article to Solve This Error.

How to create a udf in PySpark which returns an array of strings Error Occurs?

Today I get the following error How to create a udf in PySpark which returns an array of strings? in python.

How To Solve create a udf in PySpark which returns an array of strings Error ?

  1. How To Solve create a udf in PySpark which returns an array of strings Error ?

    To Solve create a udf in PySpark which returns an array of strings Error You need to initialize a StringType instance:
    label_udf = udf(my_udf, ArrayType(StringType()))

  2. How to create a udf in PySpark which returns an array of strings?

    To Solve create a udf in PySpark which returns an array of strings Error You need to initialize a StringType instance:
    label_udf = udf(my_udf, ArrayType(StringType()))

Solution 1

You need to initialize a StringType instance:

label_udf = udf(my_udf, ArrayType(StringType()))
#                                           ^^ 
df.withColumn('subset', label_udf(df.col1)).show()
+------------+------+
|        col1|subset|
+------------+------+
|     oculunt|[s, n]|
|predistposed|[s, n]|
| incredulous|[s, n]|
+------------+------+

Summery

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