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CSV.出力

Python​

py
with open('a.csv', 'w') as f:
    writer = csv.writer(f)
    writer.writerow(['a', 'b', 'c'])

PHP​

php
fputcsv($arr1);

Ruby​

rb
CSV.generate("out.csv", ?,) {|writer|
  writer << ["aaa", "bbb", "ccc", "ddd"]
}
rb
require 'csv'

CSV.generate("out.csv", ?,) {|writer|
  writer << ["aaa", "bbb", "ccc",     "ddd"]
  writer << ["eee", "fff", "ggg,GGG", "hhh"]
}

PowerShell​

powershell
Export-Csv -Path a.csv