old_contents: from Bio.Seq import Seq
  
  if __name__ == '__main__':
      sequence = Seq('AGTACACTGGT')
  
      print "Here is a sequence: "
      print sequence
  
      print "And here is it's complement: "
      print sequence.complement()
  
  
  
new_contents: # This uses BioPython, and is a good check to ensure that you have installed
  # Enthought's Canopy correctly.
  
  from Bio.Seq import Seq
  
  if __name__ == '__main__':
      sequence = Seq('AGTACACTGGT')
  
      print "Here is a sequence: "
      print sequence
  
      print "And here is it's complement: "
      print sequence.complement()
  
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