Bug: double zip generator

The profiling of this code does not work

```python

def doublezip():
    rows = [(1, 2, None), (3, 4, None), (5, 6, None)]
    filtered = list(
        zip(*[
            col for col in zip(*rows)
            if any(cell is not None for cell in col)
        ])
    )

if __name__ == "__main__":
    doublezip()
```