Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.

def reverse(L):
    rL = L[::-1]
    for i, e in enumerate(rL):
        if type(e) is list:
            rL[i] = reverse(e)
    return rL