Fix recently introduced Python 3 incompatibility

[LingMan]

Fixes d4aad57

[JoeLametta]

@LingMan Sorry, I don't understand what's the purpose of this PR: even though whipper is going to be ported to Python 3 in the future (#78), right now it only supports Python 2.7. The proposed PR surely isn't enough to make it Python 3 compatible... could you better explain its rationale?

Thanks,
Joe

[LingMan]

You're absolutely right, it doesn't make it Python 3 compatible. I just noticed the breakage while looking at the diff and saw no reason to hold off a fix. Especially considering that all the other prints in that file already use (), which makes this instance easy to miss.

[JoeLametta]

@LingMan Understood.
Merged, thanks.