>>> from notes import ordena_notes

>>> l = [['44444444D',8.3],['88888888H',10.0],['22222222B',4.8],['66666666F',5.3]]
>>> ld = ordena_notes(l)
>>> for e in ld:
...     print(e[0], e[1])
... 
22222222B 4.8
66666666F 5.3
44444444D 8.3
88888888H 10.0