app3.py

# import packages
from flask import Flask

# create app
app = Flask(__name__)

# Define api
@app.route("/")
def index():
    return "This is Home Page"
# develop api
@app.route("/hello")
def hello():
    return "This is hello, world page"

# static
#develop api
@app.route("/Ajay")
def welcome():
    return "Welcome Ajay, what is your order"

# static
#develop api
@app.route("/C B Shukla")
def greet():
    return "Welcome C B Shulka ji, what is your plan for today"

# dynamic
# develop api
@app.route('/<name>')
def namaskara(name):
    return f'welcome {name}. What would you like to order.'

# route param
@app.route('/post/<id>')
def show_post(id):
    return f'Post ID is: {id}'

@app.route('/product/<name>')
def get_prodcut(name):
    return 'Product is  :' + name

@app.route('/sale/<transaction_id>')
def get_sale(transaction_id = 0):
    return 'The trasaction is ' + str(transaction_id)

# multiple param
@app.route('/create/<first_name>/<last_name>')
def create(first_name=None, last_name=None):
    return 'Hello ' + first_name + last_name

if __name__ == "__main__":
    app.run(host="127.0.0.1", port=8083, debug=False)