How do I reduce dicts in Python across multiple processes?

# Example in Python
import multiprocessing

# Function to reduce dictionaries
def reduce_dicts(dicts):
    result = {}
    for d in dicts:
        for key, value in d.items():
            if key in result:
                result[key] += value
            else:
                result[key] = value
    return result

if __name__ == "__main__":
    # Sample data
    dict_list = [
        {'a': 1, 'b': 2},
        {'a': 2, 'b': 3},
        {'a': 3, 'c': 4}
    ]

    # Create a pool of processes
    with multiprocessing.Pool(processes=4) as pool:
        # Split dicts into chunks and process in parallel
        chunk_size = len(dict_list) // 4
        chunks = [dict_list[i:i + chunk_size] for i in range(0, len(dict_list), chunk_size)]
        
        # Map reduce function to the chunks
        results = pool.map(reduce_dicts, chunks)

        # Combine the results
        final_result = reduce_dicts(results)
        print(final_result)  # Output: {'a': 6, 'b': 5, 'c': 4}