title: Error message "python-pylint 'C0103:Invalid constant name"
body: <p>I'm confused about the error(s) in this photo:</p>
  <p><a href="https://i.stack.imgur.com/UVB1s.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UVB1s.png" alt="Enter image description here" /></a></p>
  <p>I don't know how to fix them. My program is a Python-<a href="https://en.wikipedia.org/wiki/Flask_%28web_framework%29" rel="nofollow noreferrer">Flask</a> web frame. When I use Visual Studio Code to debug my program, Pylint shows these errors. I know this problem doesn't matter, but it makes me annoyed. How can I fix it?</p>
  <pre><code># -*- coding: utf-8 -*-
  import sys
  from flask import Flask
  from flask_bootstrap import Bootstrap
  from flask_moment import Moment
  #from flask_wtf import Form
  #from wtforms import StringField, SubmitField
  #from wtforms.validators import Required
  from flask_sqlalchemy import SQLAlchemy
  
  reload(sys)
  sys.setdefaultencoding('utf-8')
  
  app = Flask(__name__)
  app.config['SECRET_KEY'] = 'hard to guess string'
  app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql://root:@localhost:3306/test?'
  app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True
  app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True
  
  bootstrap = Bootstrap(app)
  moment = Moment(app)
  db = SQLAlchemy(app)
  
  
  if __name__ == '__main__':
      db.create_all()
      app.run()
  </code></pre>