blues_m = ['T', 'b3', 'P4', 'b5', 'P5', 'b7']

mh = ['T', 'M2', 'b3', 'P4', 'P5', 'b6', 'M7']

mm = ['T', 'M2', 'b3', 'P4', 'P5', 'P6', 'M7']

m = ['T', 'M2', 'M3', 'P4', 'P5', 'P6', 'M7']





def gam(gamme, ton,  degre=0):


	chroma = ['c', 'c#', 'd', 'eb', 'e', 'f', 'f#', 'g', 'ab', 'a', 'bb', 'b']

	relat = {'T':0, 'b2':1, 'M2':2, 'b3':3, 'M3':4, 'P4':5, 'b5':6, 'P5':7, 'b6':8, 'P6':9, 'b7':10, 'M7':11}


	index_ton = chroma.index(ton)

	chroma_ord = chroma[index_ton:]+chroma[:index_ton]

	r = []

	c = 0

	for i in gamme:



		rel = relat[i]

		ecart = 0

		if rel != 0:

			ecart = (rel - c)/2

			if ecart == 1:

				ecart = '+ 1'


			elif ecart == 0.5:

				ecart = '+ 1/2'

			elif ecart == 1.5:

				ecart = '+ 1 1/2'

			c = rel

		x = (i, chroma_ord[rel].capitalize(), ecart)

		r.append(x)



	return r





def harmo(gamme, ton,  degre=0):

	r = gam(gamme, ton)

	note = [i[1] for i in r]

	ecart = [i[2] for i in r]

	if degre > 0:

		note = note[degre-1:]+note[:degre-1]

		ecart = ecart[degre:]+ecart[:degre-1]

	print (note)

	print (ecart)







if __name__ == '__main__':

	import random

	chroma = ['c', 'c#', 'd', 'eb', 'e', 'f', 'f#', 'g', 'ab', 'a', 'bb', 'b']

	gamme = {'mh':mh, 'mm':mm, 'mb':blues_m, 'm':m}

	t = random.choice(chroma)

	gg = random. choice(('mh','mm','mb','m'))

	g = gamme[gg]

	r = gam(g, t)

	print('Gamme de {0} {1}'.format(t, gg))

	print('\n')

	for i in r:

		print (i)