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Asked: 2026-05-20T20:14:58+00:00

I’m working with large CSV. How can I take a random sample of rows—say,

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I’m working with large CSV. How can I take a random sample of rows—say, 200 total—and recombine them into a CSV with the same structure as the original?

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  1. Editorial Team

    The procedure I would use is as follows:

    1. Generate 200 unique numbers between 0 and the number of lines in the CSV file.
    2. Read each line of the CSV file and keep a track of which line number your are reading. If its line number matches one of the numbers above, then output it.
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