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연습 문제

String to integer

Now you'll use the .cast() method you learned in the previous exercise to convert all the appropriate columns from your DataFrame model_data to integers!

To convert the type of a column using the .cast() method, you can write code like this:

dataframe = dataframe.withColumn("col", dataframe.col.cast("new_type"))

지침

100 XP
  • Use the method .withColumn() to .cast() the following columns to type "integer". Access the columns using the df.col notation:
    • model_data.arr_delay
    • model_data.air_time
    • model_data.month
    • model_data.plane_year