How do I chunk dicts in Python in a memory-efficient way?

In Python, you can chunk dictionaries in a memory-efficient way by using a generator function. This allows you to process the dictionary in smaller pieces without loading the entire structure into memory at once. Below is an example demonstrating how to do this:

def chunk_dict(original_dict, chunk_size): """Yield successive chunk_size dictionaries from original_dict.""" it = iter(original_dict) chunk = dict() for index, key in enumerate(it): chunk[key] = original_dict[key] if (index + 1) % chunk_size == 0: yield chunk chunk = dict() if chunk: yield chunk # Example usage sample_dict = {1: 'a', 2: 'b', 3: 'c', 4: 'd', 5: 'e', 6: 'f'} for chunk in chunk_dict(sample_dict, 2): print(chunk) # Output: {1: 'a', 2: 'b'}, {3: 'c', 4: 'd'}, {5: 'e', 6: 'f'}

keywords: chunking dictionaries memory-efficient python generators

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