added thing in the app.py

app.py

@@ -1,11 +1,22 @@
-from flask import Flask
+from flask import request, Flask
+import json
 
 app = Flask(__name__)
 
 
-@app.route("/")
-def helloworld():
-    return "Helle from the hell"
+@app.route('/plus_one')
+def plus_one():
+    x = int(request.args.get('x', 1))
+    return json.dumps({'x': x + 1})
 
-if __name__ == "__main__":
-    app.run(debug=True,host="0.0.0.0",port=5000)
+
+@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})