remove_gatekeeper.py

#!/usr/bin/env python3

import os
import xattr

APP_DIR = "/Applications"
ATTR = "com.apple.quarantine"

def remove_r(path: str):
    if ATTR in xattr.listxattr(path):
        xattr.removexattr(path, ATTR)
    if (os.path.isdir(path)):
        for f in os.listdir(path):
            remove_r(os.path.join(path, f))

for app in os.listdir(APP_DIR):
    app_path = os.path.join(APP_DIR, app)
    if ATTR in xattr.listxattr(app_path):
        try:
            remove_r(app_path)
        except PermissionError as e:
            print(f'No permission for \"{app_path}\", skipped')