tf.autograph.to_graph

Converts a Python entity into a TensorFlow graph.

tf.autograph.to_graph(
    entity, recursive=True, experimental_optional_features=None
)

Also see: tf.autograph.to_code, tf.function.

Unlike tf.function, to_graph is a low-level transpiler that converts Python code to TensorFlow graph code. It does not implement any caching, variable management or create any actual ops, and is best used where greater control over the generated TensorFlow graph is desired. Another difference from tf.function is that to_graph will not wrap the graph into a TensorFlow function or a Python callable. Internally, tf.function uses to_graph.

Example Usage

  def foo(x):
    if x > 0:
      y = x * x
    else:
      y = -x
    return y

  converted_foo = to_graph(foo)

  x = tf.constant(1)
  y = converted_foo(x)  # converted_foo is a TensorFlow Op-like.
  assert is_tensor(y)

Supported Python entities include:

• functions
• classes
• object methods

Functions are converted into new functions with converted code.

Classes are converted by generating a new class whose methods use converted code.

Methods are converted into unbound function that have an additional first argument called self.

Args
entity	Python callable or class to convert.
recursive	Whether to recursively convert any functions that the converted function may call.
experimental_optional_features	None, a tuple of, or a single tf.autograph.experimental.Feature value. Controls the use of optional features in the conversion process.

Returns
Same as entity, the converted Python function or class.

Raises
ValueError	If the entity could not be converted.