the bug is the diy csv loader. use instead the csv module or its equivalent. My experience parsing csv's (how hard can it be?) often end with nested lists of it

the bug is the diy csv loader. use instead the csv module or its equivalent. My experience parsing csv's (how hard can it be?) often end with nested lists of iterators, complex logic to deal with edge cases, and other things that fail on painful-to-diagnose corner cases - exactly like what the author describes.