#------------------------------------------------------------------------------
#  File4.py
#------------------------------------------------------------------------------

def filter(oldfile, newfile):
   infile = open(oldfile, 'r')
   outfile = open(newfile, 'w')
   while True:
      text = infile.readline()
      if len(text) == 0:
         break
      if text[0] == "#":
         continue

      # Put any more processing logic here
      outfile.write(text)
   # end while
   infile.close()
   outfile.close()
# end filter()


#-- main ----------------------------------------------------------------------

filter('File4.py', 'File4.py.bak')
filter('Matrix.py', 'Matrix.py.bak')