[issue21910] File protocol should document if writelines must handle generators sensibly

[Dan Haffey]

Dan Haffey added the comment:

+1, I just lost an hour-plus compute job to this. It sure violates POLA. I've been passing large generators to file.writelines since about as long as generators have existed, so I never would have guessed that a class named "StreamWriter" of all things wouldn't, you know, stream its writelines argument.

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nosy: +dhaffey

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21910>
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