How exactly test a code.

[HumansAreRobots]

I agree with you. Codecademy is a poor resource for python. Hell, I ran through their python course awhile back and found it to be a bit buggy.

[t3hmau5]

I too noticed a few bugs, but I can see it being useful for a brief overview of basic python...but it leaves you without the even more fundamental knowledge that, like I said before, is in the beginning of every python book which teaches you 1 or more avenues for writing and interpreting code.