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Verifying DataTypes

In the age of data we have access to more attributes than we ever had before. To handle all of them we will build a lot of automation but at a minimum requires that their datatypes be correct. In this exercise we will validate a dictionary of attributes and their datatypes to see if they are correct. This dictionary is stored in the variable validation_dict and is available in your workspace.

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Feature Engineering with PySpark

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Övningsinstruktioner

  • Using df create a list of attribute and datatype tuples with dtypes called actual_dtypes_list.
  • Iterate through actual_dtypes_list, checking if the column names exist in the dictionary of expected dtypes validation_dict.
  • For the keys that exist in the dictionary, check their dtypes and print those that match.

Interaktiv övning med praktiskt arbete

Testa den här övningen genom att slutföra den här exempelkoden.

# create list of actual dtypes to check
actual_dtypes_list = df.____
print(actual_dtypes_list)

# Iterate through the list of actual dtypes tuples
for attribute_tuple in ____:
  
  # Check if column name is dictionary of expected dtypes
  col_name = attribute_tuple[____]
  if col_name in ____:

    # Compare attribute types
    col_type = attribute_tuple[____]
    if col_type == validation_dict[____]:
      print(col_name + ' has expected dtype.')
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