title: 'cached_property' object has no attribute 'get', Request.args.get
body: <p>I'm coding a little Flask app in Python 3.4, but I've run into a problem with parsing GET requests. Request.args is a 'cached_object', not a function or MultiDict like in other examples, giving for example the error shown in the title. Here's my code:</p>
  
  <pre><code>from flask import Flask, Request
  
  app = Flask(__name__)
  
  @app.route('/')
  def FooBar():
      return Request.args.get("foobar")
  
  if __name__ == '__main__':
      app.run(debug=True, port=80, host='0.0.0.0')
  </code></pre>
  
  <p>What's the issue here? This is running on Debian 8.1 with the latest version of Flask.</p>