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How to Build a Simple Data Helper Class in Python

A beginner-friendly DataHelper class that safely saves and loads JSON files with automatic directory creation, perfect for production-style file handling.

json file-handling data-persistence

Python

from pathlib import Path
import json


class DataHelper:
    """Simple production-style helper for loading and saving JSON data."""

    def __init__(self, data_dir="data"):
        self.data_dir = Path(data_dir)
        self.data_dir.mkdir(exist_ok=True)

    def save(self, filename, data):
        filepath = self.da…

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