AST Visitor that looks for specific API usage without editing anything
PastaAnalyzeVisitor
./tensorflow/tensorflow/tools/compatibility/ast_edits.py

Convert a TensorShape to a list
TensorShapeProtoToList
./tensorflow/tensorflow/python/framework/tensor_util.py

The most basic RNN cell
BasicRNNCell
./tensorflow/tensorflow/python/keras/layers/legacy_rnn/rnn_cell_impl.py

Reverses variable length slices
reverse_sequence
./tensorflow/tensorflow/python/ops/array_ops.py

Gather gpu device info
gather_gpu_devices
./tensorflow/tensorflow/tools/test/gpu_info_lib.py

Extracts a strided slice of a tensor generalized python array indexing
strided_slice
./tensorflow/tensorflow/python/ops/array_ops.py

Represents the shape of a Tensor
TensorShape
./tensorflow/tensorflow/python/framework/tensor_shape.py

Decorator to define a function with a custom gradient
custom_gradient
./tensorflow/tensorflow/python/ops/custom_gradient.py

Layer normalization layer
LayerNormalization
./tensorflow/tensorflow/python/keras/layers/normalization.py

loss function
get_loss_function
./tensorflow/tensorflow/python/keras/engine/training_utils.py