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Deduplicating Records by Attribute
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Deduplicating Records by Attribute

MediumPython

Problem

Write a function that deduplicates a list of records based on a specific attribute.

Each record is a dictionary, and the selected attribute exists in every record with a hashable value. Return a new list containing the first record for each distinct attribute value, preserving input order.

Function signature: def deduplicate_records(records, attribute):

records is a list of dictionaries, and attribute is a string. The output is a list of dictionaries.

Constraints

  • 0 <= len(records) <= 1000
  • Each record is a dictionary containing attribute
  • attribute is a non-empty string
  • Each selected attribute value is hashable
  • The first record for each attribute value must be preserved

Function Signature

def deduplicate_records(records, attribute):
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