cannot import name redirect_stderr

[soundbo]

So after playing and starting some typefaces, i did installed HTLetterspacer for testing purpose. it worked fine, i thought it made some good adjustments to my spacing, then worked a lot on the font. add a second master, and thought it was time to use HTL again.

but it doesnt run anymore i get this in the macro window :

Start
Traceback (most recent call last):
  File "HT_LetterSpacer.py", line 8, in <module>
    import HT_LetterSpacer_script
  File "HT_LetterSpacer_script.py", line 22, in <module>
    from objectsGS import *
  File "GlyphsApp/objectsGS.py", line 12, in <module>
  File "ufoLib.py", line 38, in <module>
    from robofab.glifLib import GlyphSet, READ_MODE, WRITE_MODE
  File "glifLib.py", line 19, in <module>
    from robofab.pens.pointPen import AbstractPointPen
  File "pointPen.py", line 145, in <module>
    from fontTools.pens.basePen import AbstractPen
  File "__init__.py", line 1, in <module>
    from fontTools.misc.py23 import *
  File "__init__.py", line 3, in <module>
    from fontTools.misc.py23 import *
  File "py23.py", line 6, in <module>
    from contextlib import redirect_stderr, redirect_stdout
ImportError: cannot import name redirect_stderr
End

im using latest glyphs Version 2.6.1 (1230) even with the example font i got no luck

[soundbo]

seems to be related to te latest fonttools package, because after replacing it with the fonttools-3.21.1 it works again.

[anthrotype]

@soundbo I believe you are using the latest fonttools from the Github repository, which is now only compatible with python3.6 or above. The problem is the Glyphs.app's embedded python interpreter is still using python2.7, so this means Glyphs.app will no longer be compatible with new versions of fonttools, until the app is updated to ship with a modern python 3 version.

/cc @schriftgestalt

[anthrotype]

FYI, the last version of fonttools that is compatible with python2.7 is https://github.com/fonttools/fonttools/releases/tag/3.44.0

[schriftgestalt]

Thanks. As I read this, I suspected that this could be the problem. I changed the download URL.

[soundbo]

Thanks. As I read this, I suspected that this could be the problem. I changed the download URL.

Hi Georg, does this means that when we update the modules in prefs, it will DL the fonttools 3.44.0 by default ?

@soundbo I believe you are using the latest fonttools from the Github repository, which is now only compatible with python3.6 or above. The problem is the Glyphs.app's embedded python interpreter is still using python2.7, so this means Glyphs.app will no longer be compatible with new versions of fonttools, until the app is updated to ship with a modern python 3 version.

/cc @schriftgestalt

Thank you anthrotype, this explains everything.

[schriftgestalt]

Yes. With the next update it will download the right version.

[soundbo]

nice, ty Georg and everyone else for their infos and advices

[juandelperal]

Thanks!