python上的Mingus/lilypond

Question

我可以导入mingus但是子库，比如明格斯。特蕾丝。莉蓬给我一个错误：

 import mingus.core.notes
Traceback (most recent call last):
  File "<pyshell#4>", line 1, in <module>
    import mingus.core.notes
  File "C:\Users\PharaohZz\AppData\Local\Programs\Python\Python36\lib\site-packages\mingus\core\notes.py", line 29, in <module>
    from mt_exceptions import NoteFormatError, RangeError, FormatError
ModuleNotFoundError: No module named 'mt_exceptions'

或者

^{pr2}$