How can I efficiently merge multiple dictionaries in Python, considering Python 3.9+ and older versions?

I'm working on a project where I need to merge several dictionaries into one. The number of dictionaries can vary, and some of them may contain overlapping keys. What is the most efficient way to merge these dictionaries while maintaining the values from later dictionaries when there are conflicts?

For example, I want to merge the following dictionaries:

python Copy code dict1 = {'a': 1, 'b': 2} dict2 = {'b': 3, 'c': 4}enter code here dict3 = {'d': 5} And expect the merged result to be:

python Copy code {'a': 1, 'b': 3, 'c': 4, 'd': 5} Bonus: Is there a one-liner for this in Python 3.9 and later, and how can I achieve the same in older versions of Python?

This question touches on the topic of merging dictionaries, including handling conflicts, which is a common task in Python. It also encourages discussion about compatibility between newer and older versions of Python, which is often helpful in a community setting.