Comment # 15 on bug 805855 from Marcus H�we

Ok... that explains why osc doesn't use the keyring.
In python-keyring 5.3 the class is named different. Can you please
adjust the ~/.local/share/python_keyring/keyringrc.cfg:

[backend]
default-keyring = keyring.backends.kwallet.Keyring

Afterwards, try the following:
- osc config general use_keyring 1
- rm ~/.osc_cookiejar
- manually remove the [https://api.opensuse.org] section from the ~/.oscrc
- run osc again

Now it should ask for your credentials and should store it in your keyring.
If this doesn't work, please post the output of
python -c 'import keyring.backends.kwallet.Keyring'