as_default() method of tensorflow.python.framework.ops.Graph instance

    Returns a context manager that makes this `Graph` the default graph.

    

    This method should be used if you want to create multiple graphs

    in the same process. For convenience, a global default graph is

    provided, and all ops will be added to this graph if you do not

    create a new graph explicitly. Use this method with the `with` keyword

    to specify that ops created within the scope of a block should be

    added to this graph.

    

    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.

    

    The following code examples are equivalent:

    

    ```python

    # 1. Using Graph.as_default():

    g = tf.Graph()

    with g.as_default():

      c = tf.constant(5.0)

      assert c.graph is g

    

    # 2. Constructing and making default:

    with tf.Graph().as_default() as g:

      c = tf.constant(5.0)

      assert c.graph is g

    ```

    

    Returns:

      A context manager for using this graph as the default graph.