from flask import Flask

app = Flask(__name__)


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


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

from flask import Flask

app = Flask(__name__)


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


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

Index action ready with "Hello, World!" message
Index action ready with "Hello, World!" message

  from flask import Flask
  
  app = Flask(__name__)
  
  
  @app.route('/')
- def hello_world():
+ @app.route('/index')
+ def index():
      return 'Hello World!'
  
  
  if __name__ == '__main__':
      app.run()
  
Index action ready with "Hello, World!" message
## Code Before:
from flask import Flask

app = Flask(__name__)


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


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

## Instruction:
Index action ready with "Hello, World!" message
## Code After:
from flask import Flask

app = Flask(__name__)


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


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