How to Maintain Order and Uniqueness in a Dictionary of Tuples in Python 3.9?
I've been working on this all day and I'm experimenting with I'm working on a project where I need to maintain a dictionary that uses tuples as keys. The requirement is that the keys need to be unique, but I also need to keep track of the order in which they were added. Unfortunately, I'm running into issues where items are not being preserved in the insertion order when I try to update or add new keys. Here’s a simplified version of my code: ```python my_dict = {} # Adding tuples as keys my_dict[(1, 2)] = 'A' my_dict[(3, 4)] = 'B' # Trying to add a duplicate key but with a new value my_dict[(1, 2)] = 'C' print(my_dict) ``` When I run this, I expect to see that `(1, 2)` has been updated to `'C'`, but I lose the information about when it was initially added. I need a way to keep track of the original insertion order while also ensuring that duplicate keys are updated rather than causing a loss. I’ve read that Python 3.7+ dictionaries maintain insertion order, but I’m not sure how this interacts with tuple keys. Also, I need to seem to find a suitable pattern or library that can guide to achieve this behavior cleanly without restructuring my entire approach. Are there best practices or design patterns I might have overlooked? Is it worth considering `collections.OrderedDict` in this case, or can I achieve the same result with a standard dictionary? Any guidance would be appreciated! This is for a desktop app running on macOS. What am I doing wrong? I'm working with Python in a Docker container on Windows 10.