Flask example

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

Flask example

from flask import Flask
app = Flask(__name__)

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

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)

Flask form

class PostForm(FlaskForm): 
    title = StringField('Title', validators=[DataRequired()]) 
    content = TextAreaField('Content', validators=[DataRequired()]) 
                      validators=[DataRequired(), Length(min=2, max=50)])
    submit = SubmitField('Post')

Similar codes

0 vote138 views1 answer
Comment transformer un chaine de caractere en liste python
Python
1 vote139 views1 answer
File methods in python
Python
0 vote137 views1 answer
Derivative of multivariable function pytorch
Python
-1 vote148 views3 answers
Python remove duplicates from list of dict
Python
7 votes137 views2 answers
Make a condition statement on column pandas
Python
0 vote202 views1 answer
Using claudinary in django
Python Django
1 vote161 views1 answer
Python tts
Python
-1 vote134 views2 answers
String template python
Python
1 vote140 views2 answers
What is fourier transform in python
Python
0 vote149 views1 answer
Add button to python gui file
Python