from flask import Flask
import json

app=Flask(__name__)

@app.route("/plus_one")
def plus_one():
  x= int(request.args.get('x', 1))
  return json.dumps({'x': x + 1 })

@app.route("/plus_two")
def plus_two():
  x = int(request.args.get('x', 1))
  return json.dumps({'x': x + 2})

@app.route("/square")
def square():
  x = int(request.args.get('x', 1)) 
  return json.dumps({'x': x * x})

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