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advanced patterns in Python loop when modifying a list during iteration

๐Ÿ‘€ Views: 55 ๐Ÿ’ฌ Answers: 1 ๐Ÿ“… Created: 2025-06-23
python loops list-comprehension Python

I'm having trouble with I recently switched to I'm not sure how to approach I'm sure I'm missing something obvious here, but I'm sure I'm missing something obvious here, but I'm working with an scenario with a for loop in Python 3.9 where I'm trying to filter a list of integers, but the output is not what I expect. I'm iterating over the list to remove elements that are less than a certain threshold. However, it seems like the loop is skipping some elements. Hereโ€™s the code snippet Iโ€™m working with: ```python numbers = [1, 3, 5, 2, 8, 0, 6] threshold = 4 for number in numbers: if number < threshold: numbers.remove(number) ``` After running this, the `numbers` list contains `[3, 5, 8, 0, 6]`, but I expected it to be `[5, 8, 6]`. I realize that modifying the list while iterating over it can lead to unexpected behavior, but I thought I could get away with it in this case. Iโ€™ve tried reversing the list or using `list(filter(...))`, but Iโ€™d prefer to keep the loop structure for clarity. Is there a better way to achieve this without running into issues? Whatโ€™s the best practice here when needing to remove items from a list during iteration? Am I missing something obvious? The stack includes Python and several other technologies. Any feedback is welcome! This is my first time working with Python 3.11. Any ideas how to fix this? This is happening in both development and production on Ubuntu 20.04. Am I missing something obvious?