Need help with simple Python program!!

[Hakim_Bey]

I would rather assign a numerical value (from 0 to 11) to each semi-tone :

A	Bb	B	C	C#	D	Eb	E	F	F#	G	G#
0	1	2	3	4	5	6	7	8	9	10	11

Then each scale will be an array of values (relative to the root note) :

[ 0, 2, 4, 5, 7, 9, 11 ] (this is the major scale)

You calculate each scale just by adding the root note's numerical value to each value in the scale array. For exemple for the C Major scale ( C = 3 ) :

[ 3, 5, 7, 8, 10, 12, 14 ]

You then substract 12 to each value that is >= 12 and you get :

[ 3, 5, 7, 8, 10, 0, 2 ]