Python's Standard Library Can Convert CSV to JSON Without Any Extra Packages

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A developer tutorial on DEV Community demonstrates how to build a CSV-to-JSON converter using only Python's built-in csv and json modules, requiring no third-party libraries like pandas. The solution uses csv.DictReader to automatically map each row to a dictionary based on the header row, eliminating the need for manual header parsing. The json.dump function then writes the output with readable indentation, making it easy to visually verify the result. The converter also returns a row count as a quick sanity check to catch upstream data issues before inspecting the output file. While the approach works well for clean, well-formed CSVs, the author notes that highly irregular exports may need additional preprocessing before conversion.

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