Copy kerning from caps to small caps

#MenuTitle: Copy kerning from caps to small caps
"""Looks for Cap Kerning pairs and reduplicates their kerning in .sc glyphs."""

import GlyphsApp

Font = Glyphs.orderedDocuments()[0].font
Doc  = Glyphs.currentDocument
FontMasterID = Doc.selectedFontMaster().id

Caps = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]
SCending = ".sc"

for leftCap in Caps:
    for rightCap in Caps:
        LGroup = "@MMK_L_" + leftCap
        RGroup = "@MMK_R_" + rightCap

        kerningValuePlain = Font.kerningForPair(FontMasterID, leftCap, rightCap)
        kerningValueGroup = Font.kerningForPair(FontMasterID, LGroup, RGroup)
        kerningValuePlainGroup = Font.kerningForPair(FontMasterID, leftCap, RGroup)
        kerningValueGroupPlain = Font.kerningForPair(FontMasterID, LGroup, rightCap)

        if kerningValuePlain < 10000:
            leftSC = leftCap.lower() + SCending
            rightSC = rightCap.lower() + SCending
            Font.setKerningForPair(FontMasterID, leftSC, rightSC, kerningValuePlain)
            print "Kerning Pair set:", leftSC, rightSC, kerningValuePlain

        elif kerningValueGroup < 10000:
            leftSCGroup = "@MMK_L_" + leftCap.lower() + SCending
            rightSCGroup = "@MMK_R_" + rightCap.lower() + SCending
            Font.setKerningForPair(FontMasterID, leftSCGroup, rightSCGroup, kerningValueGroup)
            print "Kerning Pair set:", leftSCGroup, rightSCGroup, kerningValueGroup

        elif kerningValueGroupPlain < 10000:
            leftSCGroup = "@MMK_L_" + leftCap.lower() + SCending
            rightSC = rightCap.lower() + SCending
            Font.setKerningForPair(FontMasterID, leftSCGroup, rightSC, kerningValueGroupPlain)
            print "Kerning Pair set:", leftSCGroup, rightSC, kerningValueGroupPlain

        elif kerningValuePlainGroup < 10000:
            leftSC = leftCap.lower() + SCending
            rightSCGroup = "@MMK_R_" + rightCap.lower() + SCending
            Font.setKerningForPair(FontMasterID, leftSC, rightSCGroup, kerningValueGroup)
            print "Kerning Pair set:", leftSC, rightSCGroup, kerningValuePlainGroup