title: Browser cached previous Flask project
body: <p>I have one Flask project on my PC and now I would like to setup another one, so I just created a .py file, copied the hello world sample code and ran it. Then I opened <code>http://127.0.0.1:5000/</code> in my browser to test the new app, but unfortunately the browser loaded my other project (the first one). It seems it has been cached somehow, because I'm getting the same results from Chrome and Firefox too. (The apps are in different folders with different file names)</p>
  
  <p>I assume it's a trivial thing, but I would really appreciate if somebody could tell me how could solve the conflict between the two apps (if that's the problem) or how can I clean the cache.  </p>
  
  <p>You can see below that I'm using a basic setup and it runs without any errors so I have no idea what can cause the issue. </p>
  
  <pre><code>from flask import Flask
  app = Flask(__name__)
  
  @app.route('/')
  def hello_world():
      return 'Hello World!'
  
  if __name__ == '__main__':
      app.run()
  </code></pre>