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Managing Immutable Keys in a Python Dictionary with Dynamic Configurations

πŸ‘€ Views: 57 πŸ’¬ Answers: 1 πŸ“… Created: 2025-06-14
python dictionaries immutable-keys configuration Python

I just started working with I can't seem to get I'm currently working on a project using Python 3.10 where I need to manage a configuration dictionary that should have immutable keys but also allow for dynamic updates based on user input. My initial approach was to use tuples as keys, but I encountered some unexpected behavior when trying to update the values associated with these keys. Here's a simplified version of what I've implemented: ```python config = {('feature_a', 'enabled'): True, ('feature_b', 'enabled'): False} # Trying to update the value for feature_a dynamically user_input = ('feature_a', 'enabled') config[user_input] = False # This works fine # Now I want to check back and update it again but using a list update_input = ['feature_a', 'enabled'] # This is a list, not a tuple try: config[tuple(update_input)] = True # This raises a KeyError except KeyError as e: print(f"KeyError: {e}") ``` I was expecting the dynamic input to work similarly, but it raises a `KeyError`. It seems like converting the list to a tuple should allow it to fetch the value, but it doesn’t. I suspect this is due to how the dictionary handles immutability or perhaps how I'm structuring my keys. Additionally, I noticed that when I try to check if a key exists with a different type (like a list instead of a tuple), it does not recognize it. Is there an efficient way to handle user input for dictionary keys while ensuring immutability? Are there best practices for situations like this to avoid such errors? What would be the recommended way to handle this? This is for a REST API running on Windows 11. Has anyone dealt with something similar? This issue appeared after updating to Python latest. Any help would be greatly appreciated!