check_no_restricted_modules_used.py

import argparse
import os
parser = argparse.ArgumentParser("")
parser.add_argument('--target-branch', required=True)
args = parser.parse_args()

command = "git diff {target_branch} --name-status".format(target_branch=args.target_branch)
diffs = os.popen(command).read()

for current_file in diffs.splitlines():
    operation = current_file[0]
    current_file_name = str(current_file)[1:].strip()
    if current_file_name.startswith("app_name/app/src/") and operation == 'A':
        os.system("echo \"##teamcity[buildStatus text='Adding new files to app module is restricted']\"")
        raise Exception("Adding new files to app module is restricted")