get_default_graph()

    Returns the default graph for the current thread.

    

    The returned graph will be the innermost graph on which a

    `Graph.as_default()` context has been entered, or a global default

    graph if none has been explicitly created.

    

    NOTE: The default graph is a property of the current thread. If you

    create a new thread, and wish to use the default graph in that

    thread, you must explicitly add a `with g.as_default():` in that

    thread's function.

    

    Returns:

      The default `Graph` being used in the current thread.