Recursion error when attempting to log out

    from flask import (Flask, g,render_template,flash,redirect,url_for)
    from flask.ext.bcrypt import check_password_hash
    from flask.ext.login import LoginManager,login_user,logout_user,login_required#Have to be logged in to use this view

    import models #File created
    import forms #File created

    DEBUG = True
    PORT = 8000
    HOST = '0.0.0.0'

    app = Flask(__name__)
    app.secret_key = 'rfvreg5tgb45tg5re'
    login_manager = LoginManager()
    login_manager.init_app(app)
    login_manager.login_view = 'login' #Login refers to the def login() function

    @login_manager.user_loader
    def load_user(userid):
      try:
        return models.User.get(models.User.id==userid) #Find out what user id is
      except models.DoesNotExist:
        return None

    @app.before_request
    def before_request():
      """Connect to database before each request."""
      g.db = models.DATABASE
      g.db.connect()


    @app.after_request
    def after_request(response):
      """Close the database connection after each request"""
      g.db.close()
      return response

    @app.route('/register',methods=('GET','POST'))
    def register():
      form = forms.RegisterForm()
      if form.validate_on_submit():
        flash("Yay you registered!", "success")
        models.User.create_user(
          username = form.username.data,
          email = form.email.data,
          password = form.password.data

        )
        return redirect(url_for('index'))
      return render_template('register.html',form=form)

    @app.route('/login',methods=('GET','POST'))
    def login():
      form = forms.LoginForm()
      if form.validate_on_submit():
        try:
          user = models.User.get(models.User.email == form.email.data)
        except models.DoesNotExist:
          flash("Your email or password doesn't match!","error")
        else:
          if check_password_hash(user.password, form.password.data):
            login_user(user)
            flash("You've been logged in!","success")
            return redirect(url_for('index'))
          else:
            flash("your email or password doesn't match!", "error")
      return render_template('login.html', form=form)     #Why do we use form=form???? FIND OUT




    @app.route('/logout')  
    @login_required #You must be logged if not you will get rediredted to the log in page
    def logout_user():                             
      logout_user() #Deletes the login_user(user) cookie in the log in view
      flash("You've been logged out! Come back soon!","success")                                                      
      return redirect(url_for('index'))                           

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




    if __name__ == '__main__':
      models.initialize()
      try:
        models.User.create_user(
          username='Terrell Stewart',
          email='terrell.p.stewart@gmail.com',
          password='password',
          admin=True
        )
      except ValueError :
        pass

      app.run(debug=DEBUG,host=HOST,port=PORT)