Python strings can be repeated using the * operator. Here, "#" is repeated to match the length of the masked portion of cc. Check out the Python tutorial.

Per the Kata's definition of capital, "We will consider a, e, i, o, and u as vowels for this Kata," there are no capital vowels. You could always lowercase the string first if you like, though.

Yeah... I probably should have stripped the leading and trailing punctuation from words like you, but it was much more satisfying to just not remove '-'s. Kinda like saying, "Up yours, t-rex!"

In Python 2, both / and // perform floor division by default, so there is no error.