I think this code is correct but...
N = str(x)
s = ""
for i in range(1,len(N)+1):
s += N[len(N)-i]
In the console, it works, if I do reverse("Python!"), it gives me the right result. However, I didn't seem to pass the test because in the prompt box it says that the above returns None -- I'm not sure why that is the case, as it returned !nohytP
Replace this line with your code.