To merge two dictionaries in Python in a single expression, you can use the ** unpacking operator or the update() method introduced in Python 3.9+. The ** operator allows combining dictionaries like this:
This creates a new dictionary, with dict2 overwriting keys in dict1 if they conflict. Alternatively, in Python 3.9 and later, you can use the | operator:
Both methods are concise and efficient for merging dictionaries. Note that neither approach modifies the original dictionaries; they create a new one.