String argument -> name of list?
gustafl at algonet.se
Sat Nov 3 17:56:32 CET 2001
I'm making a program for training musical scales. It should for example be
able to ask things like: "What is the name of the sixth chord in the F#
I have a list of scale names that looks like this:
# Scale names
scales = [
There's also a list for each of these scales, so that the program can
calculate how a scale looks, based on the chromatic scale and a root key.
# Modal scale structures
ionian = [0, 2, 2, 1, 2, 2, 2]
dorian = [0, 2, 1, 2, 2, 2, 1]
phrygian = [0, 1, 2, 2, 2, 1, 2]
lydian = [0, 2, 2, 2, 1, 2, 2]
mixolydian = [0, 2, 2, 1, 2, 2, 1]
aeolian = [0, 2, 1, 2, 2, 1, 2]
locrian = [0, 1, 2, 2, 1, 2, 2]
The program chooses one of the scales randomly, so I may get for example
the string 'dorian' in one session and the string 'locrian' in the next.
Finally, there's a function that should take any of the lists of scale
structures as an argument. Or perhaps it's better if it takes a string
value, but it's currently taking the list. Anyway I choose, the problem is
to make the conversion from a string ('ionian') to the list name (ionian)
to get the scale structure.
I wonder if it is any simple syntax for converting a string to the name of
a list? Or should I use another structure instead, like a dictionary with
strings + lists, or a list with strings + lists?
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