You can also retrieve the password from your system keyring[1]

    import keyring

    pass_is = keyring.get_password('gmail', 'whatever@gmail.com')

you set it with

    set_password(servicename, username, password)

so

    set_password('gmail', 'whatever@gmail.com', 'one of those per app passwords if you use 2factor for example')

[1] https://pypi.python.org/pypi/keyring