Shortest infinite Python program

Today's puzzle:

What's the shortest Python program that will never end?

Think about it a moment before scrolling down...

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Okay, I'll tell you my answer...

After imagining this little puzzle, and thinking a moment, I came up with this:

while 1:0

That's it. 9 characters. It's a valid Python program, and if you run it, it won't stop until you kill the process.

Can you think of a shorter one?

I only pondered this for a few minutes, so maybe you can. If so, let me know.