Quick fix!!

Another hiccup caused by fastqc update, guess its better to ignore the html rather than removing it ;) 
doing it like this it goes thought the list twice: glob.glob constructs the list of dirs/files, then with the list comprehension you go through it again. If you replace glob.glob by glob.iglob in that same one-liner, then it's more efficient, as iglob will yield one value at a time, instead of constructing the whole list.