Rearrange your geometry group for tidiness!

Haven't got much time to update lately. Been busy with work.
Still, I managed to wrote a little script when my patience was out looking at a messy geo_grp from the model department.

Just select the root geo_grp, the script will reorder all the children under it alphabetically (groups will be ordered last).

import pymel.core as pm
import maya.OpenMaya as om


def rearrangeGeoGrp(geoGrp=None):
    if not geoGrp:
        try:
            geoGrp = pm.selected(type='transform')[0]
        except:
            pass
        if not geoGrp:
            om.MGlobal.displayError('Select a geo group.')
            return

    exit = False
    grps = [geoGrp]
    while not exit:
        nextGrps = []
        for grp in grps:
            children = grp.getChildren(type='transform')

            if not children:
                om.MGlobal.displayWarning('%s : is an empty group.' %grp.longName())

            # seperate grps and plys
            cgrps, plys = [], []
            for c in children:
                checkIfPly = False
                try:
                    shp = c.getShape(ni=True)
                    if isinstance(shp, pm.nt.Mesh):
                        checkIfPly = True
                except:
                    pass

                if checkIfPly == True:
                    plys.append(c)
                else:
                    cgrps.append(c)
                    nextGrps.append(c)

            plys = sorted(plys)
            cgrps = sorted(cgrps)
            plys.extend(cgrps)

            for i, item in enumerate(plys):
                currentIndx = grp.getChildren(type='transform').index(item)
                pm.reorder(item, r=((currentIndx * -1) + i))

        if nextGrps:
            grps = nextGrps
        else:
            exit = True