how does flask work with python code example

Example 1: flask example

from flask import Flask
app = Flask(__name__)

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

Example 2: python basic flask app

# Imports necessary libraries
from flask import Flask 
# Define the app
app = Flask(__name__)

# Get a welcoming message once you start the server.
@app.route('/')
def home():
    return 'Home sweet home!'

# If the file is run directly,start the app.
if __name__ == '__main__':
    app.run(Debug=True)

# To execute, run the file. Then go to 127.0.0.1:5000 in your browser and look at a welcoming message.

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