import os
from flask import Flask
app = Flask(__name__)

@app.route("/")
def homepage():
	return "Hello World!"

if __name__ == "__main__":
	port = int(os.environ.get("PORT", 5000))
	app.run(host='0.0.0.0', port=port)
	app.run(debug=True)
@@ -94,22 +94,37 @@
 urn 
-%22Hello World!%22
+render_template(%22index.html%22)
 %0A%0Aif

Add HTML Template