Thank you, first and foremost, for making this... I've been looking for something like this for a long time, and the "Frets on Fire" guy below got me here via Google Cache.

Anyways, to my problem: I am writing a program which reads a text file of 0's and 1's, then converts them into 16th notes in a MIDI file (1 is a note, 0 is a rest). For some reason, the output file shows the correct number of notes, but they are placed next to each other with none of the rests between. Here is a sample of the code (the list is made of the first 16 characters of each line in the text file, eliminating newlines):


for line in text:
beat = list(line)
if int(beat[0]):
midi.update_time(0)
midi.note_on(channel=0, note=0x40)
midi.update_time(24)
midi.note_off(channel=0, note=0x40)
else:
midi.update_time(24)
if int(beat[1]):
midi.note_on(channel=0, note=0x40)
midi.update_time(24)
midi.note_off(channel=0, note=0x40)
else:
midi.update_time(24)

# ... continues to "if int(beat[15]):", then goes on to


midi.update_time(0)
midi.end_of_track()

midi.eof()

I am baffled as to why the rests don't appear, but perhaps I just don't have a good enough understanding of update_time(n).