app.py

from fastapi import FastAPI
from transformers import pipeline

## create a new fastapi app instance
app=FastAPI()

## intitialise text generation pipeline(code taken from huggingface)
pipe = pipeline("text2text-generation", model="google/flan-t5-small")

##first route
@app.get("/")
def home():
    return {"message":"Hello World"}

# generate a function to handle GET requests at "/generate"
@app.get("/generate")
def generate(text:str):
    # use pipeline to generate text from given input text
    output=pipe(text)
    # return generated text in json format
    return {"output":output[0]['generated_text']}