hello world flask python

1#Save the file as app.py
2from flask import Flask
3app=Flask(__name__)
4
5@app.route('/',methods=['GET','POST'])
6
7def Home():
8  return "Hello World"
9
10#Run on command Prompt following commands(Windows):
11#   >>cd Desktop/
12#   >>cd FlaskFolder
13#   >>py -3 -m venv venv
14#   >>venv\Scripts\activate
15#   >>python app.py

1from flask import Flask
2
3app = Flask(__name__)
4
5@app.route("/")
6def hello_world():
7    return "<p>Hello, World!</p>"
8
9if __name__ == "__main__":
10	app.run(debug=True)

1from flask import Flask
2app = Flask(__name__)
3
4@app.route("/")
5def index():
6    return 'Hello World'
7
8if __name__ == '__main__':
9    app.run(debug=True)

1# Extremely simple flask application, will display 'Hello World!' on the screen when you run it
2# Access it by running it, then going to whatever port its running on (It'll say which port it's running on).
3from flask import Flask
4app = Flask(__name__)
5
6@app.route('/')
7def hello_world():
8    return 'Hello, World!'
9
10if __name__ == '__main__':
11    app.run()