app.py

import gradio as gr
from happytransformer import HappyTextToText, TTSettings

def check_grammar(sentence):
  happy_tt = HappyTextToText("T5", "leslyarun/grammatical-error-correction")
  args = TTSettings(num_beams=5, min_length=1)
  # Add the prefix "grammar: " before each input 
  result = happy_tt.generate_text("grammar: " + sentence, args=args)  
  return result
  
demo = gr.Interface(check_grammar, inputs=['text'],
                    outputs="text",
                    title = "English Grammar Corrector")
                    
if __name__ == "__main__":
    demo.launch(debug=True)