Write a python script that will take as a command line argument a CSV file containing pitch(int), duration(int) and time (float). It parses the CSV file and uses the information to generate a temporary MIDI file using the midiutil library. After this it plays back the temporary midi file using pygame.mixer . Wait until the file is done playing before exiting. Show the code in a properly formatted code block
import sys
import csv
from midiutil.MidiFile import MIDIFile
import pygame.mixer
# Parse command line arguments
if len(sys.argv) != 2:
print("Usage: {} <input_csv>".format(sys.argv[0]))
sys.exit(1)
input_csv = sys.argv[1]
# Parse CSV file
pitches = []
durations = []
times = []
with open(input_csv, "r") as f:
reader = csv.reader(f)
for row in reader:
pitches.append(int(row[0]))
durations.append(int(row[1]))
times.append(float(row[2]))
# Generate MIDI file
midi_file = MIDIFile(1)
# Add track
track = 0
time = 0
midi_file.addTrackName(track, time, "Track1")
midi_file.addTempo(track, time, 120)
# Add notes
channel = 0
volume = 100
for i in range(len(pitches)):
pitch = pitches[i]
time = times[i]
duration = durations[i]
midi_file.addNote(track, channel, pitch, time, duration, volume)
# Save MIDI file
with open("temp.mid", "wb") as f:
midi_file.writeFile(f)
# Play MIDI file using pygame
pygame.mixer.init()
pygame.mixer.music.load("temp.mid")
pygame.mixer.music.play()
while pygame.mixer.music.get_busy():
continue
Output the notes for the first four bars of Ode To Joy in this CSV format
Here is an example CSV file containing the first four bars of Ode To Joy:
60,2,0 60,2,0.5 67,2,1 67,2,1.5 69,2,2 69,2,2.5 67,4,3 65,2,4 65,2,4.5 64,2,5 64,2,5.5 62,2,6 62,2,6.5 60,2,7 60,2,7.5 67,2,8 67,2,8.5 69,2,9 69,2,9.5 67,4,10 65,2,11 65,2,11.5 64,2,12 64,2,12.5 62,2,13 62,2,13.5
This CSV file can be used as the input to the Python script above. Note that the time values in this file are in units of beats, with a tempo of 120 beats per minute.