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Aug 20th, 2017
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  1. import csv
  2.  
  3. write_infile = csv.reader(open('File1.csv', 'r'))
  4. write_outfile = csv.writer(open('File2.csv', 'w'))
  5.  
  6. #write_infile = open('File1.csv', 'r')
  7. #f1 = csv.reader(write_infile)
  8. #f1 = csv.reader(write_infile, delimiter=' ')
  9.  
  10. #write_outfile = open('File2.csv', 'w')
  11. #f2 = csv.writer(write_outfile)
  12. #f2 = csv.writer(write_outfile, delimiter=' ')
  13.  
  14. phone_numbers = set()
  15.  
  16. for row in write_infile:
  17. if row[1] not in phone_numbers:
  18. write_outfile.writerow(row)
  19. # f2.writerow(row)
  20. phone_numbers.add(row[1])
  21.  
  22. # write_outfile.close()
  23. # write_infile.close()
  24.  
  25. user, phone, email
  26. joe, 123, joe@x.com
  27. mary, 456, mary@x.com
  28. ed, 123, ed@x.com
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