app.py

from flask import Flask, request, redirect,make_response, render_template,session
from flask_bootstrap import Bootstrap
from flask_wtf import FlaskForm
from wtforms.fields import StringField, PasswordField, SubmitField
from wtforms.validators import DataRequired

app = Flask(__name__)
bootstrap =Bootstrap(app)

app.config["SECRET_KEY"]= "SUPER SECRETO"


todos = ["comprar cafe ", "solicitud de compra ", "Traer"]

class LoginForm(FlaskForm):
    username = StringField("Nombre de Usuario", validators=[DataRequired()])
    password = PasswordField(" contraseña", validators=[DataRequired()])
    submit = SubmitField("SEND")


@app.errorhandler(404)
def not_found(error):
     return render_template("404.html", error=error)

@app.route("/")
def index():
    user_ip = request.remote_addr
    
    response = make_response(redirect('/hello'))
    session["user_ip"] = user_ip
   
    return response

@app.route('/hello', methods=["GET", "POST"])
def hello():
    user_ip = session.get("user_ip")
    login_form =LoginForm()
    
    context = { "user_ip":user_ip,
               "todos":todos,
               "login_form": login_form}
    
    return render_template("hello.html", **context, )

if __name__ == '__main__':
    app.run(debug=True,port=5000)