Batch split of multiple image files in half in GIMP

oc-cut.py

#!/usr/bin/env python

import math
from gimpfu import *
import os
import re

import sys

sys.stderr = open('C:/Temp/python-fu-output.txt','a')
sys.stdout=sys.stderr

def python_oc_cut(srcPath, tgtPath):
    open_images, image_ids = pdb.gimp_image_list()
    if open_images > 0:
        pdb.gimp_message ("Close open Images & Rerun")
    else:
        print 'start '+srcPath+' '+tgtPath
        # list all of the files in source & target directories
        allFileList = os.listdir(srcPath)
        print allFileList
        xform = re.compile('\.jpg', re.IGNORECASE)
        # Find all of the jpeg files in the list & make xcf file names
        # Dictionary - source & target file names
        # Loop on jpegs, open each & save as xcf
        print '1'
        for srcFile in allFileList:
            srcFileLow = srcFile.lower()
            if srcFileLow.count('.jpg') > 0:
            # Don't overwrite existing, might be work in Progress
                srcFile = os.path.join(srcPath, srcFile)
                print srcFile
                image = pdb.file_jpeg_load(srcFile, srcFile)
                # os.path.join inserts the right kind of file separator
                drawable = image.active_drawable
                pdb.script_fu_guides_remove(image, drawable)
                pdb.script_fu_guide_new_percent(image, drawable, 1, 50)
                pdb.plug_in_guillotine(image, drawable)
                img0 = gimp.image_list()[0]
                img1 = gimp.image_list()[1]
                trgFile1 = os.path.join(tgtPath, img0.name)
                trgFile2 = os.path.join(tgtPath, img1.name)
                pdb.file_jpeg_save(img0, img0.active_drawable, trgFile1, trgFile1, 0.9, 0, 0, 0, "", 0, 0, 0, 0)
                pdb.file_jpeg_save(img1, img1.active_drawable, trgFile2, trgFile2, 0.9, 0, 0, 0, "", 0, 0, 0, 0)
                pdb.gimp_image_delete(img0)
                pdb.gimp_image_delete(img1)

register(
        "oc_cut",
        "Cut images",
        "Cut images",
        "Oleg Chunikhin",
        "Oleg Chunikhin",
        "2016",
        "OC _Cut Image...",
        "",
        [
        ( PF_DIRNAME, "srcPath", "JPG Originals (source) Directory:", " " ),
        ( PF_DIRNAME, "tgtPath", "JPG Cut (target) Directory:", " " ),
        ],
        [],
        python_oc_cut,
        menu = "<Image>/OC _Cut")

main()