CSV to JSON in Python: csv.DictReader, Pandas, and Best Practices
Convert CSV to JSON in Python using csv.DictReader or pandas. Covers encoding, null handling, and outputting arrays vs. nested objects.
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Tags: data, python, csv
CSV to JSON in Python: csv.DictReader, Pandas, and Best Practices Python ships with a perfectly capable CSV parser in its standard library, and pandas adds industrial-strength data manipulation on top of it. The choice between them isn't just about preference — it depends on file size, type fidelity, and how much transformation you need. This guide covers both approaches with real code, plus the edge cases that bite you in production. Type Inference with By default, every value from is a string. JSON doesn't care — and are different, and will output as a string, not a number. Add a type inference step: --- The Pandas Approach Pandas is the right tool when you need filtering, aggregation, reshaping, or when the file is large enough that a streaming read matters. Output orientations…
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