old_contents: import sys
  
  # get hits from miranda scans
  cap = ""
  with open (sys.argv[1]) as infile1:
      for line1 in infile1:
          line1 = line1.strip()
          if "%" in line1 and "Forward:" not in line1:
              #print(line1)
              cap = cap + line1 + "\n"
  allregnettf = open(sys.argv[2], "w")
  allregnettf.write(cap)
  allregnettf.close()
  
new_contents: import sys
  
  # get hits from miranda scans
  with open(sys.argv[1]) as infile1:
      with open(sys.argv[2], "w") as outfile:
          for line1 in infile1:
              if "%" in line1 and "Forward:" not in line1:
                  outfile.write(line1)
  
subject: Write output on the file.