from flask import Flask, url_for

# create a Flask app for sample_19

app = Flask(__name__)

# define view function for "/" url

@app.route("/")

def Hello():

return "Hello World!"

# define view function for "/info"

@app.route("/info")

def info():

name = "Abi"

html = """

<b><center>

Hello, World!

My name is {}

</center></b>

""".format(name)

return html

@app.route("/name/<yourname>")

def display_name(yourname: str):

return "Hello, World! {}".format(yourname)

@app.route("/age/<int:age>")

def display_age(age: int):

return "You are {} years old".format(age)

@app.route("/say_hello")

def say_hello():

html = """

<a href={}> Hello, World!</a>

"""

# url_for gives href the link to hello_from_cat

# in other words,

# href={} becomes href="/hello_from_cat"

html = html.format(url_for("hello_from_cat"))

return html

@app.route("/hello_from_cat")

def hello_from_cat():

# links src to static/cat.jpg

return "<img src={}>".format(

url_for("static", filename="cat.jpg")

)

if __name__ == "__main__":

# run the Flask app in localhost at port 5000

app.run(host="0.0.0.0", port=5000, debug=True)