export.py

from CTFd import create_app
from CTFd.utils import ctf_name, export_ctf

import datetime
import sys
import shutil
import zipfile


app = create_app()
with app.app_context():
    backup = export_ctf()

    if len(sys.argv) > 1:
        with open(sys.argv[1], 'wb') as target:
            shutil.copyfileobj(backup, target)
    else:
        ctf_name = ctf_name()
        day = datetime.datetime.now().strftime("%Y-%m-%d")
        full_name = "{}.{}.zip".format(ctf_name, day)

        with open(full_name, 'wb') as target:
            shutil.copyfileobj(backup, target)