Dependency should be loaded in pypsark

dependency loaded with %dep should be added in pyspark

Exemple:

//Dataframe csv reader added as dependency

%dep
z.reset()
z.load("com.databricks:spark-csv_2.11:1.2.0")

// Csv reader can be used in scala
import org.apache.spark.sql.SQLContext

val sqlContext = new SQLContext(sc)
val df = sqlContext.read.format("com.databricks.spark.csv").option("header", "true").load("train.csv")
z.show(df)

// But not with pyspark
%pyspark
from pyspark.sql import SQLContext
sqlsc = SQLContext(sc)
sqlsc.read.format('com.databricks.spark.csv').load('train.csv')

Py4JJavaError: An error occurred while calling o57.load.
: java.lang.RuntimeException: Failed to load class for data source: com.databricks.spark.csv