Basic flask app python

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

Basic flask app python

#Import Flask, if not then install and import.

import os
try:
  from flask import *
except:
  os.system("pip3 install flask")
  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

0 vote365 views1 answer
Flask wtforms multiple select
Python
0 vote393 views1 answer
Mechanize python #3
Python
30 votes373 views3 answers
For c in range python
Python
5 votes363 views2 answers
Python get min max value from a dictionary
Python
0 vote391 views1 answer
Python - Cómo cruda la cuerda
Python
23 votes381 views4 answers
Delete last few items from a list python
Python
0 vote364 views1 answer
Python clear stdout
Python
19 votes341 views4 answers
Convert column series to datetime in pandas dataframe
Python
8 votes348 views1 answer
Jupyter column limit pd
Python
4 votes370 views1 answer
Python make comparison non case sensitive
Python