I'm pretty sure it's a string method so it can take any iterator as an argument. | Hacker News

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		dzderic on June 13, 2011 \| parent \| context \| favorite \| on: Python idioms I'm pretty sure it's a string method so it can take any iterator as an argument.

kragen on June 13, 2011 [–]

I think that was the deciding argument, yes.

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