ipython/ipython — comment on commit 765ba4e413f3ab0eb5ba92a11db0d0629e4bf792
File:  line 0
By takluyver:

I'm not disabling it, just switching to the standard warnings module. utils.warn's docstring says "Shoudn't we just use the built in warnings module." I came upon it because it caused some unicode/bytes friction with capturing stdout into a StringIO in the test suite. I've since resolved that friction another way, but it seemed sensible to switch to the stdlib warnings system while I had the code open.

If we're happy with using the standard library warning system, I'll look round to see where else utils.warn is used. If not, it's easy enough to change this back.