I want to improve my script for generating images of sample texts in (tiny)DrawBot directly from the ufo.
Is there an easy way to check if two glyphs has a kerning value?

thanks

f = CurrentFont()
print f.kerning[('A', 'V')]

If there is group kerning, maybe you should flatten the kerning dict in a temporary dict.
If the kerning is only available in the features, best is to compile the font it and read it back into RoboFont.

good luck!

Thanks Frederik!

Here’s a RoboFont script that will work to find kerning values for any two glyphs, just by there glyph names:

from ufoLib2 import Font
from fontTools.ufoLib.kerning import lookupKerningValue

# open the font with ufoLib2
font = Font(CurrentFont().path)

# show kerning value
print(lookupKerningValue(("A","V"), font.kerning, font.groups))

To run the script outside of RoboFont, just feed in a file path for the font:

from ufoLib2 import Font
from fontTools.ufoLib.kerning import lookupKerningValue

# open the font with ufoLib2
# replace the path with a relevant one
font = Font("src/ufo/sans/Recursive Sans-Casual A.ufo")

# show kerning value
print(lookupKerningValue(("A","V"), font.kerning, font.groups))