SELinux config file update with Python3

seupdateconfig.py

#!/usr/bin/env python3
import massedit, argparse

def update_to_disabled():
    filename = ['config']
    massedit.edit_files(filename, ["re.sub(r'^SELINUX=.*', 'SELINUX=disabled', line)"], dry_run=False)

def update_to_permissive():
    filename = ['config']
    massedit.edit_files(filename, ["re.sub(r'^SELINUX=.*', 'SELINUX=permissive', line)"], dry_run=False)

def update_to_enforcing():
    filename = ['config']
    massedit.edit_files(filename, ["re.sub(r'^SELINUX=.*', 'SELINUX=enforcing', line)"], dry_run=False)

def print_config():
    se_config = open("config", "r")
    read_config = se_config.read()
    print(read_config)
    se_config.close()


parser = argparse.ArgumentParser(description='SELinux Update Config Utility')
parser.add_argument('--disabled', action='store_true', help='update config to disabled.')
parser.add_argument('--permissive', action='store_true', help='update config to permissive.')
parser.add_argument('--enforcing', action='store_true', help='update config to enforcing.')
parser.add_argument('--show', action='store_true', help='print selinux config file.')
args = parser.parse_args()

if args.disabled:
    update_to_disabled()
elif args.permissive:
    update_to_permissive()
elif args.enforcing:
    update_to_enforcing()
elif args.show:
    print_config()
else:
    parser.print_help()