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How to Build a Data Helper Class in Python for Beginners

Create a beginner-friendly DataHelper class that stores, retrieves, filters, and summarizes records in a list of dictionaries.

dataclasses data-handling beginner

Python

from __future__ import annotations

import json
from dataclasses import dataclass, field
from typing import Any, Dict, List, Optional


@dataclass
class DataHelper:
    """A beginner-friendly helper for common data tasks."""

    data: List[Dict[str, Any]] = field(default_factory=list)

    def add_record(self, record…

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