text: import csv
  import sys
  arguments = sys.argv[1:]
  if len(arguments) != 1:
      exit()
  ofile  = open(arguments[0].split('.')[0] + '_fixed.csv', "w+", newline='')
  writer = csv.writer(ofile)
  file = open(arguments[0], 'r')
  csvfile = csv.reader(file, delimiter=',')
  firstline = True
  for row in csvfile:
      if firstline:
          firstline = False
          writer.writerow(row)
          continue
      row[2] = 'chr' + row[2]
      writer.writerow(row)