Simple flask app

# Extremely simple flask application, will display 'Hello World!' on the screen when you run it
# Access it by running it, then going to whatever port its running on (It'll say which port it's running on).
from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello, World!'

if __name__ == '__main__':
    app.run()

Source: flask.palletsprojects.com

Flask tutorial

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
   return 'Hello World’

if __name__ == '__main__':
   app.run()

Source: tutorialspoint.com

Flask how to run app

$ export FLASK_APP=hello.py
$ python -m flask run
 * Running on http://127.0.0.1:5000/

Source: flask.palletsprojects.com

Default flask app

from flask import Flask
app = Flask(__name__)

@app.route('/')
def index():
    return 'Flask'

Flask.pocoo.org quickstart

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello, World!'

Source: flask.palletsprojects.com

Python flask sample application

from flask import *
app = Flask(__name__)

@app.route("/")
def index():
  return "<h1>Hello World</h1>"

if __name__ == "__main__":
  app.run(host="0.0.0.0", port=8080, debug=False)

Similar codes

9 votes231 views2 answers
Flask template
Python Flask
0 vote333 views2 answers
Get request header flask
Python Flask
1 vote239 views1 answer
Flask post vs get
Python Flask
5 votes248 views1 answer
Flask boiler plate
Python Flask
3 votes238 views1 answer
Flask delete cookie stackoverflow
Python Flask
1 vote237 views1 answer
Return json with flask
Python Flask
1 vote219 views1 answer
Flask redirect to url
Python Flask
-2 votes248 views1 answer
Jwt authentication python flask
Python Flask
0 vote238 views1 answer
PermissionError: [Errno 13] Permission denied on flask
Python Flask
2 votes227 views2 answers
Flask 'export' is not recognized as an internal or external command, operable program or batch file.
Python Flask