old_contents: #!/usr/bin/env python
  from flask import Flask, render_template, Response
  
  from camera_pi import Camera
  
  app = Flask(__name__, template_folder='site')
  
  @app.route('/')
  def index():
      """Video streaming home page."""
      return render_template('index.html')
  
  @route('/action', method='POST')
  def action():
      """Handle button presses"""
      val = request.forms.get('command')
      print(val)
  
  def gen(camera):
      """Video streaming generator function."""
      while True:
          frame = camera.get_frame()
          yield (b'--frame\r\n'
                 b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n')
  @app.route('/video_feed')
  def video_feed():
      """Video streaming route. Put this in the src attribute of an img tag."""
      return Response(gen(Camera()), mimetype='multipart/x-mixed-replace; boundary=frame')
  
  
  if __name__ == '__main__':
      app.run(host='0.0.0.0', debug=True, threaded=True, port=8000)
  
new_contents: #!/usr/bin/env python
  from flask import Flask, render_template, Response, request
  
  from camera_pi import Camera
  
  app = Flask(__name__, template_folder='site')
  
  @app.route('/')
  def index():
      """Video streaming home page."""
      return render_template('index.html')
  
  @app.route('/action', methods=['POST'])
  def action():
      """Handle button presses"""
      val = request.forms.get('command')
      print(val)
  
  def gen(camera):
      """Video streaming generator function."""
      while True:
          frame = camera.get_frame()
          yield (b'--frame\r\n'
                 b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n')
  @app.route('/video_feed')
  def video_feed():
      """Video streaming route. Put this in the src attribute of an img tag."""
      return Response(gen(Camera()), mimetype='multipart/x-mixed-replace; boundary=frame')
  
  
  if __name__ == '__main__':
      app.run(host='0.0.0.0', debug=True, threaded=True, port=8000)
  
subject: add request import