app.py

from flask import Flask, request, render_template

app = Flask(__name__)

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/submit', methods=['POST'])
def submit():
    user_input = request.form['user_input']
    modified_text = user_input + " hey"
    return render_template('result.html', modified_text=modified_text)

if __name__ == '__main__':
    app.run(host="0.0.0.0", port=7860)