Is there an example showing how to put metronom marks to the score?
pymusicxml.directions — scamp 0.8.7 documentation is not very clear to me 
In general in SCAMP, you don’t add tempo marks directly: they are the result of tempo changes made to the main Session. For example:
from scamp import *
# By default with a rit or accel, parenthesized guide marks get printed out
# With MuseScore, this is really helpful, since they cause the rit/accel to
# play back correctly. However, I them off here to reduce visual clutter
engraving_settings.tempo.include_guide_marks = False
s = Session()
piano = s.new_part("piano")
s.start_transcribing()
s.tempo = 70
for p in range(60, 68):
piano.play_note(p, 0.7, 0.5)
s.tempo = 135
for p in range(60, 68):
piano.play_note(p, 0.7, 0.5)
s.tempo = 200
s.set_tempo_target(50, 4)
for p in range(60, 68):
piano.play_note(p, 0.7, 0.5)
piano.play_note(72, 0.7, 2)
s.stop_transcribing().to_score().show()
…produces:
Do you have a use case where you would need to add a tempo mark directly? I could make it possible to add one in the same way you would add any other text; I just haven’t seen a need.
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