# What does 'inf' mean?

I keep noticing this but I don’t know what its for.

You may need to be more specific. Where have you seen `inf`?

It’s a constant similar to pi.
I found this definition:

`math.` `inf`

A floating-point positive infinity. (For negative infinity, use `-math.inf` .) Equivalent to the output of `float('inf')` .

New in version 3.5.