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Read and Process a CSV File Efficiently
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Read and Process a CSV File Efficiently

MediumPython

Problem

Write code to read and process a CSV file, explaining your approach as you go. Asked in the coding round stage. Junior SysDE loop coding round 1.

Implement process_csv(csv_text). The first CSV row is the header. Return a list of dictionaries mapping each header to its row value. Preserve values as strings, support quoted commas and quoted newlines, and ignore blank records.

Constraints

  • The input contains a header row.
  • The input is valid CSV.
  • Every data row has the same number of fields as the header.
  • There are at most 5,000 data rows.
  • All returned values remain strings.

Function Signature

def process_csv(csv_text):
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