o ?e @s`dZddlmZddlmZddlmZddlmZddZdd Zd d Z d d Z ddZ dS)z*Utilities for computing default gradients.)dtypes) tensor_shape) array_ops)resource_variable_opscCsT|jtjkr't|}|dus|jrt|jdkr!tdt ||jdjS|jS)z7Return the dtype for the default gradient for a Tensor.NZInternal error: Tried to take gradients (or similar) of a variable without handle data: %sr) dtyperresourcerget_eager_safe_handle_datais_setlenshape_and_type ValueErrorstrt handle_datarg/home/www/facesmatcher.com/pyenv/lib/python3.10/site-packages/tensorflow/python/ops/default_gradient.pyget_zeros_dtypes    rcCsp|jtjkr2t|}|dus|jrt|jdkr!tdt ||jd}t |j t |jfS|j |jfS)zAReturn the shape and dtype for the default gradient for a Tensor.Nrrr)rrr rr r r r rrrZ TensorShapeshapeZas_dtype)rrr rrrshape_and_dtype"s       rcC$|jtjkr tjt|St|S)z9Like array_ops.zeros_like, but respects resource handles.)rrr rZzerosr zeros_likerrrrr0  rcCr)z8Like array_ops.ones_like, but respects resource handles.)rrr rZonesr ones_likerrrrr8rrcCs:|jtjkrt|}|dus|jrt|jdkrdSdS)zWhether tensor `t` supports creating a default gradient. This function assumes that `t` is of a trainable type. Args: t: Tensor Returns: Bool NrFT)rrr rr r r r rrrrsupports_default_grad@s  rN) __doc__Ztensorflow.python.frameworkrrZtensorflow.python.opsrrrrrrrrrrrs