#NEWLINE# def test_return_type( self ) : #NEWLINE# #INDENT# seq1 = Sequence ( 'ABC' ) #NEWLINE# seq2 = Sequence ( 'ABC' ) #NEWLINE# distance = hamming ( seq1 , seq2 ) #NEWLINE# self . assertIsInstance ( self , float ) #NEWLINE# self . assertEqual ( distance , 0.0 )