def random_genome():
 alphabet = TestAlphabet()
 new_genome = ''
 for letter in range(3):
  new_genome += random.choice(alphabet.letters)
 return MutableSeq(new_genome, alphabet)

def random_genome ( ) : alphabet = TestAlphabet ( ) new_genome = '' for letter in range ( 3 ) : new_genome += random . choice ( alphabet . letters ) return MutableSeq ( new_genome , alphabet )
return a random genome string .