Update app.py

app.py

@@ -3,12 +3,25 @@ from langchain.llms import HuggingFacePipeline
 from transformers import AutoTokenizer, AutoModel
 import transformers
 import torch
+from langchain.prompts import PromptTemplate
+from langchain.chains import LLMChain
 import warnings
 warnings.filterwarnings('ignore')
 
+
 model = 'MD1998/FLAN-T5-V1'
 tokenizer=AutoTokenizer.from_pretrained(model)
 
+prompt_template=PromptTemplate(input_variables=["conversation"],
+                               template="""\
+You are a helpful, respectful, and honest assistant designed to improve English language skills. Always provide accurate and helpful responses to language improvement tasks, while ensuring safety and ethical standards. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased, positive, and focused on enhancing language skills.
+If a question does not make sense or is not factually coherent, explain why instead of answering something incorrect. If you don't know the answer to a question, please don't share false information.
+Your role is to guide users through various language exercises and challenges, helping them to practice and improve their English skills in a fun and engaging way. Always encourage users to try different approaches and provide constructive feedback to help them progress.
+
+{conversation}
+""")
+
+
 pipeline=transformers.pipeline(
     "text-generation",
     model=model,
@@ -26,10 +39,13 @@ pipeline=transformers.pipeline(
 
 llm=HuggingFacePipeline(pipeline=pipeline, model_kwargs={'temperature':0.1})
 
+
+chain = LLMChain(llm=llm, prompt=prompt_template, verbose=True)
+
 def greet(prompt):
+    response = chain.run(prompt)
     
-    
-    return llm(prompt)
+    return response