Returns a ``list`` of the group or groups associated with
        **glyphName**.
        **glyphName** will be an :ref:`type-string`. If no group is found
        to contain **glyphName** an empty ``list`` will be returned. ::

            >>> font.groups.findGlyph("A")
            ["A_accented"]

def findGlyph(self, glyphName):
        """
        Returns a ``list`` of the group or groups associated with
        **glyphName**.
        **glyphName** will be an :ref:`type-string`. If no group is found
        to contain **glyphName** an empty ``list`` will be returned. ::

            >>> font.groups.findGlyph("A")
            ["A_accented"]
        """
        glyphName = normalizers.normalizeGlyphName(glyphName)
        groupNames = self._findGlyph(glyphName)
        groupNames = [self.keyNormalizer.__func__(
            groupName) for groupName in groupNames]
        return groupNames