I personally used it for google sites backup , it is strange that the Authentication part to create a session does not support http proxy and the rest of the api after generating a session file does ... That line is from 2009.
I can confirm that once the session file is created the rest of the api uses the "http_proxy" environment variable and correctly handle the connection.
https://github.com/google/gdata-python-client/blob/master/src/atom/http_core.py#L19
I personally used it for google sites backup , it is strange that the Authentication part to create a session does not support http proxy and the rest of the api after generating a session file does ... That line is from 2009.
I can confirm that once the session file is created the rest of the api uses the "http_proxy" environment variable and correctly handle the connection.