[Csv] Problems with CSV Module

[Skip Montanaro]

    Andrew> The use of iterators for reading rows is quite natural, but
    Andrew> there is no equivalent concept for writing, hence the writerow
    Andrew> method. I agree that the lack of symmetry is a bit of a wart,
    Andrew> but the proposed solution doesn't feel any better to me.

Then there's no harm in leaving well enough alone.  It can always be added
later if a crying need develops.

Skip