Question on Code Challenge 3-6

[robgarrett]

Rather than the complicated exponent solution, after checking for non-hex characters, why not just return int(hexNum, 16)?
In my solution, this worked for 1, 2, and 3 character lengths.

[REMitchell]

In the video, I mention that this is a possible solution, but that the point of the challenge was to write a solution without using the int class ;)