What are some techniques to merge dictionaries in Python?

What are some techniques to merge dictionaries in Python?

In Python, you can merge dictionaries using several techniques, such as the update() method, dictionary unpacking, and the | operator in Python 3.9.

Can you explain how the update() method works?

Sure! The update() method updates the dictionary with elements from another dictionary or from an iterable of key-value pairs. It modifies the original dictionary.

What about dictionary unpacking? How does that work?

Dictionary unpacking allows you to merge dictionaries by using the ** operator. For example, merged_dict = {**dict1, **dict2} creates a new dictionary with the contents of both.

Is there a way to merge dictionaries that also handles duplicate keys?

Yes! In Python 3.9 and later, you can use the | operator to merge dictionaries, and if there are duplicate keys, the values from the right-hand dictionary will overwrite those from the left.