.. toctree::
    config
    auth
    client
    exceptions
    helpers
    retry
    timeout
    page_iterator
    iam
    operation
    operations_client
    path_template

The google-cloud-core package contains helpers common to all google-cloud-* packages. In an attempt to reach a stable API, much of the functionality has been split out into a new package google-api-core.

.. toctree::
    :maxdepth: 2

    ``google-api-core`` Changelog <api_core_changelog>
    ``google-cloud-core`` Changelog <core_changelog>