Here is how to merge two dictionaries in a single expression in Python.

dict1 = {'a': 1, 'b': 2}
dict2 = {'c': 3, 'd': 4}

merged_dict = {**dict1, **dict2}

print(merged_dict) # Output: {'a': 1, 'b': 2, 'c': 3, 'd': 4} 

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To merge two dictionaries in a single expression in Python, you can use the {**dict1, **dict2} syntax, which is also known as double-starred dictionary unpacking. This syntax allows you to combine the key-value pairs from two dictionaries into a new dictionary.

In this example, the dictionaries dict1 and dict2 are merged into a new dictionary called merged_dict. This dictionary contains the key-value pairs from both of the original dictionaries.

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}

merged_dict = {**dict1, **dict2}

print(merged_dict) # Output: {'a': 1, 'b': 3, 'c': 4}

In this example, the b key appears in both dictionaries, with a value of 2 in dict1 and a value of 3 in dict2. When the dictionaries are merged, the value of 3 overwrites the value of 2, and the resulting merged_dict dictionary contains the key-value pair 'b': 3.

The double-starred dictionary unpacking syntax is a concise and efficient way to merge two dictionaries in Python. It can be useful in situations where you need to combine the data from multiple dictionaries into a single dictionary, such as when working with data from multiple sources or in different formats.

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