EmailSettings not working with oauth2 ? about gdata-python-client HOT 2 OPEN

I would add that when I use the credential.access_token directly in the OAuth 2.0 Playground in step 2,
I do get the same results, it works for Drive but not for EmailSettings.

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I have the same problem with email settings. I've tried the code above and other trial-error tests always obtaining an error.

I've been easily using for a lot of months something like this:

import gdata.apps.emailsettings.client

client = gdata.apps.emailsettings.client.EmailSettingsClient(domain='my.domain')
client.ClientLogin(email='myemail', password='mypassword', source='myapp')
client.UpdateSignature(username='myusername', signature='mysignature')

Someone knows the new code needed to replace this old one ?
I've been searching around and I think the problem arised with the changes in validation.

Thanks in advance, regards

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