flask app debug

debug.py

import logging
from flask import Flask, render_template
import smtplib

app = Flask(__name__)

ADMINS = ['wilensky@gmail.com']

app.config['LOG_FILE'] = 'application.log'
if not app.debug:
    import logging
    from logging import FileHandler
    file_handler = FileHandler(app.config['LOG_FILE'])
    file_handler.setLevel(logging.INFO)
    app.logger.addHandler(file_handler)

@app.route("/about")
def about():
  breadcrumbs = [
    {
      'href': '/',
      'text': 'Home'
    },
    {
      'href': '/about',
      'text': 'About'
    }
  ]
 
  ##CREATE AN ERROR
  X = "A" + 1

  return render_template('about.html', breadcrumbs=breadcrumbs)

if __name__ == "__main__":
  app.run('0.0.0.0', port=8080, debug=False)