Hi sharanssundar,
For " deploy the model in python ", it is not the deploy way in current version of TLT.
See https://devtalk.nvidia.com/default/topic/1065558/transfer-learning-toolkit/trt-engine-deployment/ for reference.
For “how to load the .engine model in python”, if you already generate a trt engine from etlt model, then your question becomes a TensorRT topic.
See doc: https://docs.nvidia.com/deeplearning/sdk/tensorrt-sample-support-guide/index.html
There are many python examples, especially under /usr/src/tensorrt/samples/python/