Python Coding challenge - Day 820| What is the output of the following Python Code?

 

Code Explanation:

1) Importing the required modules

import json, operator

json is the standard library module for encoding and decoding JSON (JavaScript Object Notation).

operator provides function equivalents of Python operators (e.g. operator.add(a, b) behaves like a + b).

2) Creating a Python dictionary

data = {"x": 5, "y": 10}

Defines a Python dict named data with two key–value pairs: "x": 5 and "y": 10.

At this point data is a normal Python object, not a JSON string.

3) Serializing the dictionary to a JSON string

txt = json.dumps(data)

json.dumps() converts the Python dict into a JSON-formatted string.

After this line, txt holds the string '{"x": 5, "y": 10}'.

Important: types change — numbers remain numeric in the JSON text but inside txt they are characters (a string).

4) Deserializing the JSON string back to a Python object

obj = json.loads(txt)

json.loads() parses the JSON string and returns the corresponding Python object.

Here it converts the JSON text back into a Python dict identical in content to data.

After this line, obj is {"x": 5, "y": 10} (a dict again).

bval = operator.add(obj["x"], obj["y"])

Accesses obj["x"] → 5 and obj["y"] → 10.

operator.add(5, 10) returns 15.

The result is stored in the variable val (an integer 15).

6) Multiplying and printing the final result

print(val * 2)

Multiplies val by 2: 15 * 2 = 30.

print() outputs the final numeric result.

Final output

30

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