B лˆd^ ã@sHdZddlmZddlmZddlmZddlmZdd„Zdd „Zd S) z)Utility to manipulate resource variables.é)Úcomposite_tensor)Úops)Ú _pywrap_utils)ÚnestcCsdd„}t ||¡S)aéConverts `ResourceVariable`s in `values` to `Tensor`s. If an object is a `CompositeTensor` and overrides its `_convert_variables_to_tensors` method, its `ResourceVariable` components will also be converted to `Tensor`s. Objects other than `ResourceVariable`s in `values` will be returned unchanged. Args: values: A nested structure of `ResourceVariable`s, or any other objects. Returns: A new structure with `ResourceVariable`s in `values` converted to `Tensor`s. cSs2t |¡rt |¡St|tjƒr*t |¡S|SdS)N)rÚIsResourceVariablerÚconvert_to_tensorÚ isinstancerÚCompositeTensorÚconvert_variables_to_tensors)Úx©r úW/var/www/html/venv/lib/python3.7/site-packages/tensorflow/python/util/variable_utils.pyÚ$_convert_resource_variable_to_tensor%s     zJconvert_variables_to_tensors.._convert_resource_variable_to_tensor)rÚ map_structure)Úvaluesrr r r r sr cCsdd„}t ||¡S)aReplaces `ResourceVariable`s in `values` with tf.nest atoms. This function is mostly for backward compatibility. Historically, `ResourceVariable`s are treated as tf.nest atoms. This is no longer the case after `ResourceVariable` becoming `CompositeTensor`. Unfortunately, tf.nest doesn't allow customization of what objects are treated as atoms. Calling this function to manually convert `ResourceVariable`s to atoms to avoid breaking tf.assert_same_structure with inputs of a `ResourceVariable` and an atom, like a `Tensor`. The specific implementation uses 0 as the tf.nest atom, but other tf.nest atoms could also serve the purpose. Note, the `TypeSpec` of None is not a tf.nest atom. Objects other than `ResourceVariable`s in `values` will be returned unchanged. Note: this function does not look into `CompositeTensor`s. Replacing `ResourceVariable`s in a `CompositeTensor` with atoms will change the `TypeSpec` of the `CompositeTensor`, which violates the semantics of `CompositeTensor` and tf.nest. So `ResourceVariable`s in `CompositeTensor`s will be returned as they are. Args: values: A nested structure of `ResourceVariable`s, or any other objects. Returns: A new structure with `ResourceVariable`s in `values` converted to atoms. cSst |¡rdS|SdS)Nr)rr)r r r r Ú$_replace_resource_variable_with_atomMs zJreplace_variables_with_atoms.._replace_resource_variable_with_atom)rr)rrr r r Úreplace_variables_with_atoms0srN) Ú__doc__Útensorflow.python.frameworkrrÚtensorflow.python.utilrrr rr r r r Ús