peft safetensors text2code LoRA GPTQ Llama-2-7B-Chat text2python instruction2code nl2code python text-generation en dataset:flytech/python-codes-25k arxiv:2210.17323 arxiv:2208.07339 base_model:TheBloke/Llama-2-7B-Chat-GPTQ base_model:adapter:TheBloke/Llama-2-7B-Chat-GPTQ license:openrail co2_eq_emissions region:us