Can Multiple Iterators Refer to Each Other in Python List Comprehensions?

Multiple Iteration in List Comprehension

In Python, multiple iterators can be used within a list comprehension. However, it raises the question if one iterator can refer to the other within the same comprehension.

To achieve a result similar to the example provided, where a nested list a is transformed into a flattened list, a list comprehension cannot be used directly. The reference to the outer loop's value in the inner loop is not supported.

Instead, a nested loop or a custom function that iterates over the nested list is a more suitable approach.

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