[Spark] Pyspark List+Json 확인하는 방법

data = [{
        'id': 'id_1',
	    'category': 'category_1'
    },
    {
        'id': 'id_2',
	    'category': 'category_2'
    }]

df = spark.createDataFrame(data)

df.printSchema()
df.show()

schema = StructType([
        StructField('id', StringType()),
        StructField('category', StringType())
    ])

df = spark.createDataFrame(data, schema)

df.printSchema()
df.show()