Merging Dictionaries in Python 9 and Later
Python 3.9 introduced a new, more readable way to merge dictionaries using the | operator.
Using the |= Operator
In addition to the | operator, Python 3.9 also introduced the |= operator for in-place dictionary merging.
dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
merged_dict = dict1 | dict2
print(merged_dict)
Output
{'a': 1, 'b': 3, 'c': 4}
This method updates dict1 with the contents of dict2, similar to how the update() method works, but with a more succinct syntax.
Merge two dictionaries in a single expression in Python
Merging dictionaries is a common task in Python programming, and doing it efficiently and concisely can significantly enhance the readability and performance of your code. With the introduction of newer versions of Python, particularly Python 3.9, the process of merging dictionaries has become more intuitive and elegant. In this article, we’ll explore several methods to merge two dictionaries in a single expression.