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How to Build a Simple Data Helper in Python for API Design

Create a beginner-friendly DataHelper class that demonstrates basic CRUD operations (add, get, list, remove) using an in-memory dictionary, ideal for learning API design concepts.

api-design data-structures crud

Python

class DataHelper:
    """Simple data helper for beginners learning API design concepts."""
    
    def __init__(self):
        self._data = {}
    
    def add_record(self, key, value):
        """Add a record to the store."""
        self._data[key] = value
        return f"Added: {key} -> {value}"
    
    def get_…

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