import os
from flask import Flask

app = Flask(__name__)

@app.route('/')
def home_page():
    return 'Hello from the SPARK learn-a-thon!'

if __name__ == '__main__':
    port = int(os.environ.get("PORT", 5000))
    app.run()

@@ -1,12 +1,107 @@
+%22%22%22 Heroku/Python Quickstart: https://blog.heroku.com/archives/2011/9/28/python_and_django%22%22%22%0A%0A
 import os%0Afr
@@ -312,10 +312,35 @@
 app.run(
+host='0.0.0.0', port=port
 )%0A

Fix app port