A loop removes items from a list while iterating over it, and users report that some items survive the cleanup. Explain why elements get skipped and give two safe ways to write it.

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Stay specific. One example, told well, beats three told fast. Make your decisions visible — what you chose between. End on what changed, for whom.

A loop removes items from a list while iterating over it, and users report that some items survive the cleanup. Explain why elements get skipped and give two safe ways to write it.

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