Python Coding challenge - Day 728| What is the output of the following Python Code?

 

Code Explanation:

1. Importing the json module

import json

The json module in Python allows us to work with JSON data.

It provides methods to serialize (convert Python objects → JSON string) and deserialize (convert JSON string → Python objects).

2. Creating a Python dictionary

data = {"a": 1, "b": 2}

Here, data is a dictionary with two key-value pairs:

"a": 1

"b": 2

3. Converting dictionary to JSON string

js = json.dumps(data)

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

Example: {"a": 1, "b": 2} → '{"a": 1, "b": 2}' (notice it becomes a string).

4. Converting JSON string back to dictionary

parsed = json.loads(js)

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

So parsed again becomes: {"a": 1, "b": 2}.

5. Adding a new key-value pair

parsed["c"] = parsed["a"] + parsed["b"]

A new key "c" is added to the dictionary.

Its value is computed as 1 + 2 = 3.

Now parsed = {"a": 1, "b": 2, "c": 3}.

6. Printing dictionary length and value

print(len(parsed), parsed.get("c", 0))

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

parsed.get("c", 0) → safely retrieves the value of "c". If "c" didn’t exist, it would return 0.

Here, "c" exists with value 3.

Final Output:

3 3

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