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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def datediff(end, start):
 """ Returns the number of days from `start` to `end`. [Row(diff=32)] """

    sc = SparkContext._active_spark_context
    return Column(sc._jvm.functions.datediff(_to_java_column(end), _to_java_column(start)))