How do I merge dicts in Python for production systems?

Merging dictionaries in Python can be done in several ways, depending on the version of Python you are using and the specific requirements of your production system. Understanding the best methods to merge dictionaries is essential for maintaining clean and efficient code.

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This guide covers various methods to merge dictionaries in Python suitable for production environments, ensuring scalability and maintainability in your codebase.
# Example of merging dictionaries in Python dict1 = {'a': 1, 'b': 2} dict2 = {'b': 3, 'c': 4} # Method 1: Using the update() method dict1.update(dict2) print(dict1) # Output: {'a': 1, 'b': 3, 'c': 4} # Method 2: Using dictionary unpacking (Python 3.5+) merged_dict = {**dict1, **dict2} print(merged_dict) # Output: {'a': 1, 'b': 3, 'c': 4} # Method 3: Using the merge operator (Python 3.9+) merged_dict = dict1 | dict2 print(merged_dict) # Output: {'a': 1, 'b': 3, 'c': 4}

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