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OOP & classes

Classes, instances, methods, dataclasses, and object-oriented design in Python.

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OOP & classes easy

How to merge dictionaries by a key in Python with a class

This code defines a DataMerger class that collects dictionary records and merges them by a specified key, combining fields from multiple records with the same key.

classes dictionaries merging
Python 
class DataMerger:
    def __init__(self):
        self.records = []

    def add_record(self, record):
        if isinstance(record, dict):
            self.records.append(record)
        else:
            raise TypeError("Record must be a dictionary")

    def merge_by_key(self, key):
        merged = {}
        for …
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