text: # Copyright 2020 Google, LLC.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  # [START cloudbuild_python_flask]
  import os
  
  from flask import Flask
  
  app = Flask(__name__)
  
  
  @app.route("/")
  def hello_world():
      name = os.environ.get("NAME", "Everyone!")
      return f"Hello {name}!"
  
  
  if __name__ == "__main__":
      app.run(debug=True, host="0.0.0.0", port=int(os.environ.get("PORT", 8080)))
  # [END cloudbuild_python_flask]