depthen.py

import glob
import os
import shutil

try:
     shutil.rmtree("./export")
except Exception:
     pass

os.mkdir("./export")

for filename in glob.iglob('./**/*[!.py]', recursive=True):
     if os.path.isdir(filename) or filename.startswith("./export"): continue

     path = "./export/"+filename[2:].replace("__.FOS.__", "/")
     os.makedirs(os.path.dirname(path), exist_ok=True)
     shutil.copyfile(filename, path)

flatten.py

import glob
import os
import shutil

try:
     shutil.rmtree("./import")
except Exception:
     pass

os.mkdir("./import")

for filename in glob.iglob('./**/*[!.py]', recursive=True):
     if os.path.isdir(filename) or filename.startswith("./import"): continue

     shutil.copyfile(filename, "./import/"+filename[2:].replace("/", "__.FOS.__"))