Python Coding challenge - Day 353| What is the output of the following Python Code?

 

Code

import json  

data = '{"x": 10, "y": 20}'  

print(json.loads(data)["y"])

Explanation

1. Importing the json module

import json

The json module is part of Python's standard library.

It allows you to work with JSON data (JavaScript Object Notation), a lightweight data-interchange format used for storing and exchanging data.

JSON data is commonly used in APIs, web applications, and configuration files.

2. Creating a JSON-formatted string

data = '{"x": 10, "y": 20}'

data is a JSON-formatted string.

A JSON string always uses double quotes for keys and string values.

Here, the string represents a dictionary-like structure with two key-value pairs:

{

  "x": 10,

  "y": 20

}

3. Converting the JSON string into a Python dictionary

json.loads(data)

The json.loads() function converts the JSON string into a Python dictionary.

After this operation, the result is:

{"x": 10, "y": 20}

x becomes a key with the value 10.

y becomes a key with the value 20.

This makes it easy to access and manipulate the data as if it were a normal Python dictionary.

4. Accessing the value associated with the key "y"

json.loads(data)["y"]

The key "y" is used to retrieve its corresponding value from the dictionary.

From the converted dictionary:

{"x": 10, "y": 20}

The value associated with "y" is 20.

5. Printing the value

print(json.loads(data)["y"])

The print() function outputs the value 20 to the console.

Final Output

20