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Prevent "dictionary changed size during iteration" error #14
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In Python 3, this will return a generator. When the subsequent code modifies the list being operated on, it will trigger a RuntimeError. By using `list()` we force a copy of the list to be made.
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In Python 3, this will return a generator. When the subsequent code modifies the list being operated on, it will trigger a RuntimeError.
By using
list()we force a copy of the list to be made.