app.py

from fastapi import FastAPI
from transformers import pipeline

##Create a new FASTAPI app instance
app = FastAPI()

##Initialize the text generation pipeline
pipe = pipeline("text2text-generation", model="google/flan-t5-small")

@app.get("/")
def home():
    return {"My First GenAI app!"}

#Define a function to handle the GET request at '\generate'
@app.get("/generate")
def generate(text:str):
    ##use the pipeline to genearate text from given input text
    output=pipe(text)

    ##return the generated text in JSON response
    return {"output":output[0]['generated_text']}