app.py

import random
from flask import Flask, request, make_response, jsonify

app = Flask(__name__, instance_relative_config=True)

@app.route('/add')
def add():
    a = request.args.get('a', type=float)
    b = request.args.get('b', type=float)
    if a and b:
        return make_response(jsonify(s=a+b), 200) #HTTP 200 OK
    else:
        return make_response('Invalid input\n', 400) #HTTP 400 BAD REQUEST

#Endpoint /sub for subtraction which takes a and b as query parameters.
@app.route('/sub')
def sub():
    a = request.args.get('a', type=float)
    b = request.args.get('b', type=float)
    if a and b:
        return make_response(jsonify(s=a-b), 200) #HTTP 200 OK
    else:
        return make_response('Invalid input\n', 400) #HTTP 400 BAD REQUEST
#Endpoint /mul for multiplication which takes a and b as query parameters.
@app.route('/mul')
def mul():
    a = request.args.get('a', type=float)
    b = request.args.get('b', type=float)
    if a and b:
        return make_response(jsonify(s=a*b), 200) #HTTP 200 OK
    else:
        return make_response('Invalid input\n', 400) #HTTP 400 BAD REQUEST
#Endpoint /div for division which takes a and b as query parameters. Returns HTTP 400 BAD REQUEST also for division by zero.
@app.route('/div')
def div():
    a = request.args.get('a', type=float)
    b = request.args.get('b', type=float)
    if a and b and b!=0:
        return make_response(jsonify(s=a/b), 200) #HTTP 200 OK
    else:
        return make_response('Invalid input\n', 400) #HTTP 400 BAD REQUEST
#Endpoint /mod for modulo which takes a and b as query parameters. Returns HTTP 400 BAD REQUEST also for division by zero.
@app.route('/mod')
def mod():
    a = request.args.get('a', type=float)
    b = request.args.get('b', type=float)
    if a and b:
        return make_response(jsonify(s=a%b), 200) #HTTP 200 OK
    else:
        return make_response('Invalid input\n', 400) #HTTP 400 BAD REQUEST
#Endpoint /random which takes a and b as query parameters and returns a random number between a and b included. Returns HTTP 400 BAD REQUEST if a is greater than b.
@app.route('/random')
def random():
    a = request.args.get('a', type=float)
    b = request.args.get('b', type=float)
    if a and b and (a>b):
        

        return make_response(jsonify(random.randrange(a, b)), 200) #HTTP 200 OK
    else:
        return make_response('Invalid input\n', 400) #HTTP 400 BAD REQUEST

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