Sorting a Set of Nested Dictionaries in Python - implementing Key Extraction
I'm optimizing some code but I've searched everywhere and can't find a clear answer. I'm trying to sort a list of nested dictionaries based on a specific key within those dictionaries, but I'm running into an scenario where the sort is not behaving as expected. The dictionaries are structured like this: ```python my_data = [ {'name': 'Alice', 'info': {'age': 30, 'city': 'New York'}}, {'name': 'Bob', 'info': {'age': 25, 'city': 'Los Angeles'}}, {'name': 'Charlie', 'info': {'age': 35, 'city': 'Chicago'}} ] ``` I want to sort `my_data` by the `age` key inside the `info` dictionaries. I tried using the `sorted()` function with a lambda function as the key argument: ```python sorted_data = sorted(my_data, key=lambda x: x['info']['age']) ``` However, I'm getting a `KeyError: 'info'` for one of the entries. I checked the data and confirmed that all entries have the 'info' key. Upon further inspection, I realized that I accidentally modified one of the dictionaries and removed the 'info' key during some previous operations. To handle this, I want to ensure that the sorting function can handle missing keys gracefully without raising an behavior. I thought about using the `dict.get()` method, but I'm unsure how to incorporate that into my sorting logic effectively. Can anyone suggest how to modify the sorting so that it either skips entries without the 'info' key or assigns them a default value for sorting? Here’s what I’ve tried so far, but it still throws errors: ```python sorted_data = sorted(my_data, key=lambda x: x.get('info', {}).get('age', float('inf'))) ``` This should theoretically work, but I’m still working with issues when the key is missing. Any insights would be greatly appreciated! My development environment is Windows. Am I missing something obvious? I'm working on a microservice that needs to handle this. Is there a better approach? This issue appeared after updating to Python latest.