Python Coding challenge - Day 774| What is the output of the following Python Code?

 

Code Explanation:

Import the json module

import json

This imports Python’s json module.

It allows converting between Python objects and JSON (JavaScript Object Notation) strings.

Common functions:

json.dumps() → Python → JSON string

json.loads() → JSON string → Python object

Create a dictionary

data = {"x": 3, "y": 4}

A Python dictionary named data is created.

It contains two key-value pairs:

'x': 3

'y': 4

Now data = {'x': 3, 'y': 4}

Convert dictionary to JSON string

js = json.dumps(data)

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

So now,

js = '{"x": 3, "y": 4}'

This is a string, not a Python dictionary.

Convert JSON string back to dictionary

parsed = json.loads(js)

json.loads() converts the JSON string js back into a Python dictionary.

Now parsed = {'x': 3, 'y': 4}

Add a new key-value pair

parsed["z"] = parsed["x"] * parsed["y"]

A new key 'z' is added to the dictionary.

The value is calculated by multiplying 'x' and 'y':

→ 3 * 4 = 12

Now parsed becomes:

{'x': 3, 'y': 4, 'z': 12}

Print dictionary information

print(len(parsed), parsed["z"])

len(parsed) → number of keys in the dictionary = 3

parsed["z"] → value of 'z' = 12

Final Output

3 12

500 Days Python Coding Challenges with Explanation