using python.ly in a python script

[Stefan Thomas]

Dear community,

I'm trying to use the python.ly package in a python package, but without success.

I' tried it with:

#!/usr/bin/env python3
import ly
Music = "c d e f g"
Music = ly.pitch.transpose.Transposer("c","des",Music)
print(Music)

I get:

AttributeError: module 'ly' has no attribute 'pitch'

What's going wrong in my mind?

Thanks for your help!

Stefan

[Jean Abou Samra]

You need

import ly.pitch

Importing a Python package doesn't automatically import all submodules (otherwise it could be very slow for huge packages with many modules).

[Stefan Thomas]

Dear Jean,

thanks for your reply.

Unfortunately it still doesn't work.

I get now:

AttributeError: module 'ly.pitch' has no attribute 'transpose'

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[Peter Bjuhr]

This is something I've been using:

import ly.document
from ly.pitch import transpose

def transposeMusic(music, fromstr, tostr, lang='english'):
def pitchFromStr(pstr):
readp = ly.pitch.pitchReader(lang)(pstr.replace("'",
'').replace(',', ''))
return ly.pitch.Pitch(*readp, octave=ly.pitch.octaveToNum(pstr))
fromPitch = pitchFromStr(fromstr.lower())
toPitch = pitchFromStr(tostr.lower())
transposer = transpose.Transposer(fromPitch, toPitch)
doc = ly.document.Document("{" + music + "}")
cursor = ly.document.Cursor(doc)
transpose.transpose(cursor, transposer, language=lang)
transposed = doc.plaintext()
return transposed[1:-1]

Best Peter

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[Stefan Thomas]

Dear Peter,

thanks for Your reply. Your code works nicely!

To view this discussion on the web visit https://groups.google.com/d/msgid/frescobaldi/CABYE3tRLEAD-aMzyxTMaS%2B_VWfqadwT9cwMdtmzAXBUfTAHJdA%40mail.gmail.com.

[Peter Bjuhr]

Great! Thanks!

Best Peter

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