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Python Flask App for CSV to JSON Converter

Build a Flask app that converts CSV files to JSON
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Prompt
You are a Python web developer. Build a Flask application where users can upload a CSV file and download the converted JSON. The app should: 1) Accept CSV upload, 2) Use pandas to convert, 3) Handle large files, 4) Provide download link, 5) Limit file size, 6) Add tests, 7) Use Bootstrap. Provide code.

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