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tf.Graph().as_default

日期：2018-05-02点击：606收藏

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.

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