Python/keyring

https://github.com/jaraco/keyring

# pip install secretstorage dbus-python
pip install keyring

>>> import keyring
>>> keyring.set_password("system", "username", "password")
>>> keyring.get_password("system", "username")
'password'

$ keyring --help
$ keyring set system username
Password for 'username' in 'system':
$ keyring get system username
password