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.
# 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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