U Dv f @s&dddZedkr"ddlZedS)NcCs"||kr||S|dk r$|dk s$t|dk r8|dk s8t|dkri}i}|D]B\}}|drv|D] }|||<qfqP|drP|D] }|||<qqP|\} } d} } | dr| } d} n || } | dr| } d} n || } | | f| | f| | f| | fg} | D]}||kr||Sq|S)a Note: This expects kerning to be a flat dictionary of kerning pairs, not the nested structure used in kerning.plist. >>> groups = { ... "public.kern1.O" : ["O", "D", "Q"], ... "public.kern2.E" : ["E", "F"] ... } >>> kerning = { ... ("public.kern1.O", "public.kern2.E") : -100, ... ("public.kern1.O", "F") : -200, ... ("D", "F") : -300 ... } >>> lookupKerningValue(("D", "F"), kerning, groups) -300 >>> lookupKerningValue(("O", "F"), kerning, groups) -200 >>> lookupKerningValue(("O", "E"), kerning, groups) -100 >>> lookupKerningValue(("O", "O"), kerning, groups) 0 >>> lookupKerningValue(("E", "E"), kerning, groups) 0 >>> lookupKerningValue(("E", "O"), kerning, groups) 0 >>> lookupKerningValue(("X", "X"), kerning, groups) 0 >>> lookupKerningValue(("public.kern1.O", "public.kern2.E"), ... kerning, groups) -100 >>> lookupKerningValue(("public.kern1.O", "F"), kerning, groups) -200 >>> lookupKerningValue(("O", "public.kern2.E"), kerning, groups) -100 >>> lookupKerningValue(("public.kern1.X", "public.kern2.X"), kerning, groups) 0 Nz public.kern1.z public.kern2.)AssertionErroritems startswithget)pairZkerninggroupsfallbackZglyphToFirstGroupZglyphToSecondGroupgroupZ groupMembersZglyphfirstsecondZ firstGroupZ secondGrouppairsr s W