data.json

{
    "languages": {
        "python": {
            "name": "Python",
            "author": "Guido Van Rossum",
            "usedFor": ["Scripting", "Web Development", "Text processing", "Data Science"]
        },
        "go": {
            "name": "Go",
            "author": "Google",
            "usedFor": ["Devops Tooling", "Low-latency Servers", "command-line Tools"]
        }
    }
}

load.py

import json

# Open a file pointer
fp = open("data.json", "r")

# Decoded result
result = json.load(fp)
languages = result.get("languages")

if languages:
    golang = languages.get("go")
    
    if golang:
        name = golang.get("name")
        count = len(golang.get("usedFor"))
        # Prints 'Go is mainly used for 3 reasons'
        print(f"{name} is mainly used for {count} reasons")