mentioned port in app.run(port) in flask code example
Example 1: how to change port in flask app
from flask import Flask
app = Flask(__name__)
@app.route("/")
def hello():
return "Hello World!"
if __name__ == '__main__':
app.run(host="localhost", port=8000, debug=True)
Example 2: how to change port in flask app
flask run -h localhost -p 3000