add pluggable device list comments
diff --git a/tensorflow/python/eager/context.py b/tensorflow/python/eager/context.py
index c7994a1..0d44206 100644
--- a/tensorflow/python/eager/context.py
+++ b/tensorflow/python/eager/context.py
@@ -1437,6 +1437,8 @@
self._physical_device_to_index = {
p: i for i, p in enumerate(self._physical_devices)
}
+ #We maintain a seperate list just so we can check whether the device in
+ #_physical_devices is a PluggableDevice.
pluggable_devs = pywrap_tfe.TF_ListPluggablePhysicalDevices()
self._pluggable_devices = [
PhysicalDevice(name=d.decode(), device_type=d.decode().split(":")[1])
