m210run

#! /usr/bin/env python
# The line above tells some systems (e.g. Linux/Apple shells) what program to
# use to execute this script.

# Import the libraries we need
import os
import sys
from music21 import (
    clef,
    environment,
    metadata,
    meter,
    note,
    stream,
    )

# Tell music21 what to use to play midi and display score
environment.set('midiPath', '/usr/bin/timidity')
environment.set('musicxmlPath', '/usr/bin/musescore')

# Only run this if the script is executed directly, not imported
if __name__ == '__main__':
    # Complain if there were no arguments passed by the user
    if len(sys.argv) < 3:
        # First, print a helpful message
        print('add a "score" argument to see the score.')
        print('add a "text" argument to see the python objects.')
        print('add a "midi" argument to hear it.')
        print('e.g. To hear the tune: {command} midi'.format(
            command=sys.argv[0],
            ))
        # Now exit without doing anything
        sys.exit()

    src_path = sys.argv[1]
    with open(src_path) as src_handle:
        src = src_handle.read()

    code = compile(
        src,
        os.path.basename(src_path),
        'exec',
    )

    exec(code)

    remaining_args = sys.argv[2:]

    # See if the user put the word 'midi' in the arguments
    if 'midi' in remaining_args:
        # The stream.Score (tune) object knows how to play itself using the
        # environment set midi player and will do so when its show method is
        # called with a 'midi' argument.
        tune.show('midi')

    # See if the user put the word 'text' in the arguments
    if 'text' in remaining_args:
        # The stream.Score (tune) object knows how to display itself as python
        # objects in text, and will do so when its show method is called with
        # a 'text' argument.
        tune.show('text')

    # See if the user put the word 'score' in the arguments
    if 'score' in remaining_args:
        # The stream.Score (tune) object knows how to display itself as
        # musical score, and will do so by default when its show method is
        # called with no arguments.
        tune.show()